diff --git a/app/logical/daily_maintenance.rb b/app/logical/daily_maintenance.rb
index 0e3257fb3..f4b51d1e5 100644
--- a/app/logical/daily_maintenance.rb
+++ b/app/logical/daily_maintenance.rb
@@ -5,7 +5,7 @@ class DailyMaintenance
     TagPruner.new.prune!
     Upload.delete_all(['created_at < ?', 1.day.ago])
     ModAction.delete_all(['created_at < ?', 3.days.ago])
-    Delayed::Job.delete_all(['created_at < ?'], 1.day.ago)
+    Delayed::Job.delete_all(['created_at < ?', 1.day.ago])
     PostVote.delete_all(['created_at < ?', 1.month.ago])
     TagSubscription.process_all
     prune_ad_hits
diff --git a/app/logical/tag_pruner.rb b/app/logical/tag_pruner.rb
index cc9f548db..10284776e 100644
--- a/app/logical/tag_pruner.rb
+++ b/app/logical/tag_pruner.rb
@@ -1,7 +1,7 @@
 class TagPruner
   def prune!
     Tag.without_timeout do
-      Tag.destroy_all(["post_count <= 0 and name like '%:%'"])
+      Tag.destroy_all(["post_count <= 0 and name like '%%:%%'"])
     end
   end
 end