diff --git a/redbot/cogs/cleanup/cleanup.py b/redbot/cogs/cleanup/cleanup.py
index f07039df6..b685af276 100644
--- a/redbot/cogs/cleanup/cleanup.py
+++ b/redbot/cogs/cleanup/cleanup.py
@@ -94,7 +94,7 @@ class Cleanup(commands.Cog):
         ):
             if message.created_at < two_weeks_ago:
                 break
-            if check(message):
+            if message_filter(message):
                 collected.append(message)
                 if number and number <= len(collected):
                     break