diff --git a/apps/emqx_replay/test/props/prop_replay_message_storage.erl b/apps/emqx_replay/test/props/prop_replay_message_storage.erl
index baab164f0..8be5a5edb 100644
--- a/apps/emqx_replay/test/props/prop_replay_message_storage.erl
+++ b/apps/emqx_replay/test/props/prop_replay_message_storage.erl
@@ -293,7 +293,7 @@ messages(Topic) ->
         Ts,
         list(Topic),
         interleaved(
-            ?LET(Messages, vector(length(Ts), list(message())), lists:zip(Ts, Messages))
+            ?LET(Messages, vector(length(Ts), scaled(4, list(message()))), lists:zip(Ts, Messages))
         )
     ).