diff --git a/src/proto_alpha/lib_protocol/src/main.ml b/src/proto_alpha/lib_protocol/src/main.ml
index 6bc662f11..044e32847 100644
--- a/src/proto_alpha/lib_protocol/src/main.ml
+++ b/src/proto_alpha/lib_protocol/src/main.ml
@@ -18,9 +18,10 @@ let max_block_length =
   Alpha_context.Block_header.max_header_length
 
 let validation_passes =
-  Updater.[ { max_size = 32 * 1024 ; max_op = None  } ; (* 32kB FIXME *)
-            { max_size = 32 * 1024 ; max_op = None  } ; (* 32kB FIXME *)
-            { max_size = 1024 * 1024 ; max_op = None  } ] (* 1MB *)
+  Updater.[ { max_size = 32 * 1024 ; max_op = Some 32 } ; (* 32kB FIXME *)
+            { max_size = 32 * 1024 ; max_op = None } ; (* 32kB FIXME *)
+            { max_size = 32 * 1024 ; max_op = Some 32 } ; (* 32kB FIXME *)
+            { max_size = 1024 * 1024 ; max_op = None } ] (* 1MB *)
 
 let rpc_services = Services_registration.get_rpc_services ()
 
diff --git a/src/proto_alpha/lib_protocol/src/operation_repr.ml b/src/proto_alpha/lib_protocol/src/operation_repr.ml
index dd7766ee6..9faa3d1f1 100644
--- a/src/proto_alpha/lib_protocol/src/operation_repr.ml
+++ b/src/proto_alpha/lib_protocol/src/operation_repr.ml
@@ -433,10 +433,10 @@ let parse (op: Operation.t) =
 
 let acceptable_passes op =
   match op.contents with
-  | Anonymous_operations _
   | Sourced_operations (Consensus_operation _) -> [0]
   | Sourced_operations (Amendment_operation _ | Dictator_operation _) -> [1]
-  | Sourced_operations (Manager_operations _) -> [2]
+  | Anonymous_operations _ -> [2]
+  | Sourced_operations (Manager_operations _) -> [3]
 
 type error += Invalid_signature (* `Permanent *)
 type error += Missing_signature (* `Permanent *)