diff --git a/redbot/cogs/cleanup/cleanup.py b/redbot/cogs/cleanup/cleanup.py
index 2cd2d37e8..e7b66b2e5 100644
--- a/redbot/cogs/cleanup/cleanup.py
+++ b/redbot/cogs/cleanup/cleanup.py
@@ -374,7 +374,7 @@ class Cleanup(commands.Cog):
         to_delete.append(ctx.message)
 
         reason = "{}({}) deleted {} messages in channel {}.".format(
-            author.name, author.id, number, channel.name
+            author.name, author.id, len(to_delete), channel.name
         )
         log.info(reason)