diff --git a/lib/graphql/anycable/cleaner.rb b/lib/graphql/anycable/cleaner.rb
index ef5fb7d..132b4ae 100644
--- a/lib/graphql/anycable/cleaner.rb
+++ b/lib/graphql/anycable/cleaner.rb
@@ -37,7 +37,7 @@ def clean_subscriptions
 
             redis.del(key)
           end
-        end  
+        end
       end
 
       def clean_fingerprint_subscriptions