diff --git a/src/main/run/of_michelson.ml b/src/main/run/of_michelson.ml
index 4a9b7e1c3..6e8733e0e 100644
--- a/src/main/run/of_michelson.ml
+++ b/src/main/run/of_michelson.ml
@@ -75,7 +75,7 @@ let make_dry_run_options (opts : dry_run_options) : options result =
       match Memory_proto_alpha.Protocol.Alpha_context.Timestamp.of_notation st with
         | Some t -> ok (Some t)
         | None -> simple_fail ("\""^st^"\" is a bad timestamp notation") in
-  ok @@ make_options ?predecessor_timestamp:predecessor_timestamp ~amount ?source:sender ?payer:source ()
+  ok @@ make_options ?predecessor_timestamp:predecessor_timestamp ~amount ?sender ?source ()
 
 let ex_value_ty_to_michelson (v : ex_typed_value) : Michelson.t result =
   let (Ex_typed_value (value , ty)) = v in
diff --git a/src/test/coase_tests.ml b/src/test/coase_tests.ml
index 57e55b495..f335ec45b 100644
--- a/src/test/coase_tests.ml
+++ b/src/test/coase_tests.ml
@@ -204,8 +204,8 @@ let transfer () =
     in
     let%bind () =
       let amount = Memory_proto_alpha.Protocol.Alpha_context.Tez.zero in
-      let payer = first_contract in
-      let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~amount ~payer () in
+      let source = first_contract in
+      let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~amount ~source () in
       expect_eq_n_strict_pos_small ~options program "transfer_single" make_input make_expected in
     ok ()
   in
@@ -234,8 +234,8 @@ let sell () =
     in
     let%bind () =
       let amount = Memory_proto_alpha.Protocol.Alpha_context.Tez.zero in
-      let payer = first_contract in
-      let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~amount ~payer () in
+      let source = first_contract in
+      let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~amount ~source () in
       expect_n_strict_pos_small ~options program "sell_single" make_input make_expecter in
     ok ()
   in
diff --git a/src/test/hash_lock_tests.ml b/src/test/hash_lock_tests.ml
index bff1e8219..7bfe77c88 100644
--- a/src/test/hash_lock_tests.ml
+++ b/src/test/hash_lock_tests.ml
@@ -78,7 +78,7 @@ let commit () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_eq ~options program "commit"
@@ -127,7 +127,7 @@ let reveal_young_commit () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_string_failwith ~options program "reveal"
@@ -159,7 +159,7 @@ let reveal_breaks_commit () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_string_failwith ~options program "reveal"
@@ -191,7 +191,7 @@ let reveal_wrong_commit () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_string_failwith ~options program "reveal"
@@ -223,7 +223,7 @@ let reveal_no_reuse () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_string_failwith ~options program "reveal"
@@ -256,7 +256,7 @@ let reveal () =
   let options =
     Proto_alpha_utils.Memory_proto_alpha.make_options
       ~predecessor_timestamp
-      ~payer:first_contract
+      ~sender:first_contract
       ()
   in
   expect_eq ~options program "reveal"
diff --git a/src/test/id_tests.ml b/src/test/id_tests.ml
index dfe5be581..db8b78960 100644
--- a/src/test/id_tests.ml
+++ b/src/test/id_tests.ml
@@ -48,7 +48,7 @@ let buy_id () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.one) ()
   in
   let new_website = e_bytes_string "ligolang.org" in
@@ -81,7 +81,7 @@ let buy_id_sender_addr () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.one) ()
   in
   let new_website = e_bytes_string "ligolang.org" in
@@ -115,7 +115,7 @@ let buy_id_wrong_amount () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.fifty_cents) ()
   in
   let param = e_pair owner_website (e_some (e_address new_addr)) in
@@ -134,7 +134,7 @@ let update_details_owner () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero) 
       ()
   in
@@ -175,7 +175,7 @@ let update_details_controller () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -217,7 +217,7 @@ let update_details_nonexistent () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -284,7 +284,7 @@ let update_details_unchanged () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -316,7 +316,7 @@ let update_owner () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -355,7 +355,7 @@ let update_owner_nonexistent () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -386,7 +386,7 @@ let update_owner_wrong_addr () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.zero)
       ()
   in
@@ -416,7 +416,7 @@ let skip () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.one) ()
   in
   let new_website = e_bytes_string "ligolang.org" in
@@ -450,7 +450,7 @@ let skip_wrong_amount () =
   in
   let new_addr = first_owner in
   let options = Proto_alpha_utils.Memory_proto_alpha.make_options
-      ~payer:first_contract
+      ~sender:first_contract
       ~amount:(Memory_proto_alpha.Protocol.Alpha_context.Tez.fifty_cents) ()
   in
   let new_website = e_bytes_string "ligolang.org" in
diff --git a/src/test/multisig_v2_tests.ml b/src/test/multisig_v2_tests.ml
index e21736586..0ed619c1d 100644
--- a/src/test/multisig_v2_tests.ml
+++ b/src/test/multisig_v2_tests.ml
@@ -73,8 +73,8 @@ let wrong_addr () =
     id_counter_list = [1,0 ; 2,0] ;
     msg_store_list = []
   } in
-  let source = contract 3 in
-  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+  let sender = contract 3 in
+  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let%bind () =
     let exp_failwith = "Unauthorized address" in
     expect_string_failwith ~options program "main"
@@ -89,8 +89,8 @@ let message_size_exceeded () =
     id_counter_list = [1,0] ;
     msg_store_list = []
   } in
-  let source = contract 1 in
-  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+  let sender = contract 1 in
+  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let%bind () =
     let exp_failwith = "Message size exceed maximum limit" in
     expect_string_failwith ~options program "main"
@@ -107,8 +107,8 @@ let maximum_number_of_proposal () =
     id_counter_list = [1,1] ;
     msg_store_list = [(bytes1, e_set [e_address@@ addr 1])]
   } in
-  let source = contract 1 in
-  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+  let sender = contract 1 in
+  let options = Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let%bind () =
     let exp_failwith = "Maximum number of proposal reached" in
     expect_string_failwith ~options program "main"
@@ -126,8 +126,8 @@ let send_already_accounted () =
     msg_store_list = [(bytes, e_set [e_address@@ addr 1])]
   } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair (send_param empty_message) init_storage) (e_pair empty_op_list init_storage)
 
@@ -147,8 +147,8 @@ let send_never_accounted () =
     msg_store_list = [(bytes, e_set [e_address@@ addr 1])] ;
   } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair (send_param empty_message) init_storage) (e_pair empty_op_list final_storage)
 
@@ -168,8 +168,8 @@ let withdraw_already_accounted_one () =
     id_counter_list = [1,0 ; 2,0] ;
     msg_store_list = [] } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list final_storage)
 
@@ -189,8 +189,8 @@ let withdraw_already_accounted_two () =
     id_counter_list = [1,0 ; 2,1] ;
     msg_store_list = [(bytes, e_set [e_address@@ addr 2])] } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list final_storage)
 
@@ -212,8 +212,8 @@ let counters_reset () =
     id_counter_list = [1,0 ; 2,0 ; 3,0] ;
     msg_store_list = [] } in
   let options =
-    let source = contract 3 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 3 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list final_storage)
 
@@ -227,8 +227,8 @@ let withdraw_never_accounted () =
     msg_store_list = [] ;
   } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list init_storage)
 
@@ -243,8 +243,8 @@ let succeeded_storing () =
     msg_store_list = [(bytes, e_typed_set [] t_address)] ;
   } in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let%bind () = expect_eq_n_trace_aux ~options [1;2] program "main"
       (fun th ->
         let init_storage = storage (init_storage th) in
diff --git a/src/test/replaceable_id_tests.ml b/src/test/replaceable_id_tests.ml
index 6bf09e95a..54d7d1a64 100644
--- a/src/test/replaceable_id_tests.ml
+++ b/src/test/replaceable_id_tests.ml
@@ -44,8 +44,8 @@ let change_addr_success () =
   let init_storage = storage 1 in
   let param = entry_change_addr 2 in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list (storage 2))
 
@@ -54,8 +54,8 @@ let change_addr_fail () =
   let init_storage = storage 1 in
   let param = entry_change_addr 2 in
   let options =
-    let source = contract 3 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 3 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let exp_failwith = "Unauthorized sender" in
   expect_string_failwith ~options program "main"
     (e_pair param init_storage) exp_failwith
@@ -65,8 +65,8 @@ let pass_message_success () =
   let init_storage = storage 1 in
   let param = entry_pass_message in
   let options =
-    let source = contract 1 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 1 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   expect_eq ~options program "main"
     (e_pair param init_storage) (e_pair empty_op_list init_storage)
 
@@ -75,8 +75,8 @@ let pass_message_fail () =
   let init_storage = storage 1 in
   let param = entry_pass_message in
   let options =
-    let source = contract 2 in
-    Proto_alpha_utils.Memory_proto_alpha.make_options ~source () in
+    let sender = contract 2 in
+    Proto_alpha_utils.Memory_proto_alpha.make_options ~sender () in
   let exp_failwith = "Unauthorized sender" in
   expect_string_failwith ~options program "main"
     (e_pair param init_storage) exp_failwith
diff --git a/vendors/ligo-utils/proto-alpha-utils/x_memory_proto_alpha.ml b/vendors/ligo-utils/proto-alpha-utils/x_memory_proto_alpha.ml
index c613c86a4..a8f5aa468 100644
--- a/vendors/ligo-utils/proto-alpha-utils/x_memory_proto_alpha.ml
+++ b/vendors/ligo-utils/proto-alpha-utils/x_memory_proto_alpha.ml
@@ -1067,9 +1067,9 @@ type options = {
 let make_options
     ?(tezos_context = dummy_environment.tezos_context)
     ?(predecessor_timestamp = dummy_environment.tezos_context.predecessor_timestamp)
-    ?(source = (List.nth dummy_environment.identities 0).implicit_contract)
+    ?(sender = (List.nth dummy_environment.identities 0).implicit_contract)
     ?(self = (List.nth dummy_environment.identities 0).implicit_contract)
-    ?(payer = (List.nth dummy_environment.identities 1).implicit_contract)
+    ?(source = (List.nth dummy_environment.identities 1).implicit_contract)
     ?(amount = Alpha_context.Tez.one)
     ?(chain_id = Environment.Chain_id.zero)
     ()
@@ -1077,9 +1077,10 @@ let make_options
   let tezos_context = { tezos_context with predecessor_timestamp } in
   {
     tezos_context ;
-    source ;
+    (* yep *)
+    source = sender ;
+    payer = source ;
     self ;
-    payer ;
     amount ;
     chain_id ;
   }