diff --git a/scripts/alphanet_constants.patch b/scripts/alphanet_constants.patch
index 358d402b..e69de29b 100644
--- a/scripts/alphanet_constants.patch
+++ b/scripts/alphanet_constants.patch
@@ -1,25 +0,0 @@
-diff --git a/src/proto_alpha/lib_protocol/src/constants_repr.ml b/src/proto_alpha/lib_protocol/src/constants_repr.ml
-index 61e79c8a..f91ce282 100644
---- a/src/proto_alpha/lib_protocol/src/constants_repr.ml
-+++ b/src/proto_alpha/lib_protocol/src/constants_repr.ml
-@@ -49,15 +49,14 @@ let read_public_key s =
-   Ed25519.Public_key.of_bytes (Bytes.of_string (Hex_encode.hex_decode s))
- 
- let default = {
--  cycle_length = 2048l ;
--  voting_period_length = 32768l ;
-+  cycle_length = 64l ;
-+  voting_period_length = 1024l ;
-   time_before_reward =
-     Period_repr.of_seconds_exn
--      (* One year in seconds *)
--      Int64.(mul 365L (mul 24L 3600L)) ;
-+      Int64.(mul 6L 3600L) ; (* 6 hours *)
-   slot_durations =
--    List.map Period_repr.of_seconds_exn [ 60L ] ;
--  first_free_baking_slot = 16 ;
-+    List.map Period_repr.of_seconds_exn [ 60L ; 30L ; 30L ; 30L ; 10L ] ;
-+  first_free_baking_slot = 4 ;
-   max_signing_slot = 15 ;
-   instructions_per_transaction = 16 * 1024 ;
-   proof_of_work_threshold =
diff --git a/src/proto_alpha/lib_protocol/src/constants_repr.ml b/src/proto_alpha/lib_protocol/src/constants_repr.ml
index b1e8af1d..0ff3337e 100644
--- a/src/proto_alpha/lib_protocol/src/constants_repr.ml
+++ b/src/proto_alpha/lib_protocol/src/constants_repr.ml
@@ -67,15 +67,15 @@ let read_public_key s = Ed25519.Public_key.of_hex_exn (`Hex s)
 
 let default = {
   preserved_cycles = 5 ;
-  cycle_length = 2048l ;
-  blocks_per_commitment = 32l ;
+  cycle_length = 128l ;
+  blocks_per_commitment = 4l ;
   voting_period_length = 32768l ;
   time_before_reward =
     Period_repr.of_seconds_exn
       (* One year in seconds *)
       Int64.(mul 365L (mul 24L 3600L)) ;
   slot_durations =
-    List.map Period_repr.of_seconds_exn [ 60L ] ;
+    List.map Period_repr.of_seconds_exn [ 60L ; 30L ; 20L ; 10L ] ;
   first_free_baking_slot = 16 ;
   max_signing_slot = 15 ;
   max_gas = 40_000 ;