diff --git a/src/passes/3-self_ast_simplified/literals.ml b/src/passes/3-self_ast_simplified/literals.ml
index 5d7be25b6..154851601 100644
--- a/src/passes/3-self_ast_simplified/literals.ml
+++ b/src/passes/3-self_ast_simplified/literals.ml
@@ -4,6 +4,27 @@ open Trace
 let peephole_expression : expression -> expression result = fun e ->
   let return expression = ok { e with expression } in
   match e.expression with
+  | E_constant ("BIG_MAP_LITERAL" , lst) -> (
+      let%bind elt =
+        trace_option (simple_error "big_map literal expects a single parameter") @@
+        List.to_singleton lst
+      in
+      let%bind lst =
+        trace (simple_error "big_map literal expects a list as parameter") @@
+        get_e_list elt.expression
+      in
+      let aux = fun (e : expression) ->
+        trace (simple_error "big_map literal expects a list of pairs as parameter") @@
+        let%bind tpl = get_e_tuple e.expression in
+        let%bind (a , b) =
+          trace_option (simple_error "of pairs") @@
+          List.to_pair tpl
+        in
+        ok (a , b)
+      in
+      let%bind pairs = bind_map_list aux lst in
+      return @@ E_big_map pairs
+    )
   | E_constant ("MAP_LITERAL" , lst) -> (
       let%bind elt =
         trace_option (simple_error "map literal expects a single parameter") @@
@@ -25,6 +46,13 @@ let peephole_expression : expression -> expression result = fun e ->
       let%bind pairs = bind_map_list aux lst in
       return @@ E_map pairs
     )
+  | E_constant ("BIG_MAP_EMPTY" , lst) -> (
+      let%bind () =
+        trace_strong (simple_error "BIG_MAP_EMPTY expects no parameter") @@
+        Assert.assert_list_empty lst
+      in
+      return @@ E_big_map []
+    )
   | E_constant ("MAP_EMPTY" , lst) -> (
       let%bind () =
         trace_strong (simple_error "MAP_EMPTY expects no parameter") @@
diff --git a/src/passes/operators/operators.ml b/src/passes/operators/operators.ml
index 65b55c18e..13510fedc 100644
--- a/src/passes/operators/operators.ml
+++ b/src/passes/operators/operators.ml
@@ -85,6 +85,7 @@ module Simplify = struct
       ("list_iter" , "LIST_ITER") ;
       ("list_fold" , "LIST_FOLD") ;
       ("list_map" , "LIST_MAP") ;
+      (*ici*)
       ("map_iter" , "MAP_ITER") ;
       ("map_map" , "MAP_MAP") ;
       ("map_fold" , "MAP_FOLD") ;
@@ -167,6 +168,14 @@ module Simplify = struct
       ("Map.literal" , "MAP_LITERAL" ) ;
       ("Map.size" , "SIZE" ) ;
 
+      ("Big_map.find_opt" , "MAP_FIND_OPT") ;
+      ("Big_map.find" , "MAP_FIND") ;
+      ("Big_map.update" , "MAP_UPDATE") ;
+      ("Big_map.add" , "MAP_ADD") ;
+      ("Big_map.remove" , "MAP_REMOVE") ;
+      ("Big_map.literal" , "BIG_MAP_LITERAL" ) ;
+      ("Big_map.empty" , "BIG_MAP_EMPTY" ) ;
+
       ("String.length", "SIZE") ;
       ("String.size", "SIZE") ;
       ("String.slice", "SLICE") ;