diff --git a/src/proto_alpha/lib_delegate/client_baking_forge.ml b/src/proto_alpha/lib_delegate/client_baking_forge.ml
index fd2371880..d1d1c2590 100644
--- a/src/proto_alpha/lib_delegate/client_baking_forge.ml
+++ b/src/proto_alpha/lib_delegate/client_baking_forge.ml
@@ -944,9 +944,7 @@ let filter_outdated_nonces
     cctxt ~chain ~block:head () >>=? fun { protocol_data = { level = current_level } } ->
   let current_cycle = Cycle.to_int32 current_level.Level.cycle in
   let is_older_than_5_cycles block_cycle =
-    let delta = Int32.sub current_cycle block_cycle in
-    delta > 5l
-  in
+    Int32.sub current_cycle (Cycle.to_int32 block_cycle) > 5l in
   cctxt#with_lock begin fun () ->
     Client_baking_nonces.load cctxt >>=? fun nonces ->
     Block_hash.Map.fold
@@ -954,8 +952,7 @@ let filter_outdated_nonces
         acc >>=? fun acc ->
         Alpha_block_services.metadata cctxt ~chain ~block:(`Hash (hash, 0)) () >>=?
         fun { protocol_data = { level = { Level.cycle } } } ->
-        let i = Cycle.to_int32 cycle in
-        if is_older_than_5_cycles i then
+        if is_older_than_5_cycles cycle then
           return acc
         else
           return (Block_hash.Map.add hash nonce acc)
diff --git a/src/proto_alpha/lib_delegate/client_baking_forge.mli b/src/proto_alpha/lib_delegate/client_baking_forge.mli
index e22eec347..3d49d496d 100644
--- a/src/proto_alpha/lib_delegate/client_baking_forge.mli
+++ b/src/proto_alpha/lib_delegate/client_baking_forge.mli
@@ -117,3 +117,9 @@ val get_unrevealed_nonces:
   ?chain:Chain_services.chain ->
   Block_services.block ->
   (Block_hash.t * (Raw_level.t * Nonce.t)) list tzresult Lwt.t
+
+val filter_outdated_nonces:
+  #Proto_alpha.full ->
+  ?chain:Block_services.chain ->
+  Shell_services.block ->
+  unit tzresult Lwt.t
diff --git a/src/proto_alpha/lib_delegate/client_baking_lib.ml b/src/proto_alpha/lib_delegate/client_baking_lib.ml
index 6317908d6..66ebecc06 100644
--- a/src/proto_alpha/lib_delegate/client_baking_lib.ml
+++ b/src/proto_alpha/lib_delegate/client_baking_lib.ml
@@ -104,9 +104,8 @@ let get_predecessor_cycle (cctxt : #Client_context.printer) cycle =
 
 let do_reveal cctxt block blocks =
   let nonces = List.map snd blocks in
-  Client_baking_revelation.forge_seed_nonce_revelation cctxt
-    block nonces >>=? fun () ->
-  Client_baking_nonces.dels cctxt (List.map fst blocks) >>=? fun () ->
+  Client_baking_revelation.forge_seed_nonce_revelation
+    cctxt block nonces >>=? fun () ->
   return_unit
 
 let reveal_block_nonces (cctxt : #Proto_alpha.full) block_hashes =
@@ -141,4 +140,6 @@ let reveal_block_nonces (cctxt : #Proto_alpha.full) block_hashes =
 let reveal_nonces cctxt () =
   Client_baking_forge.get_unrevealed_nonces
     cctxt cctxt#block >>=? fun nonces ->
-  do_reveal cctxt cctxt#block nonces
+  do_reveal cctxt cctxt#block nonces >>=? fun () ->
+  Client_baking_forge.filter_outdated_nonces cctxt cctxt#block >>=? fun () ->
+  return_unit