diff --git a/src/Monitoring/ReplyPruning.coffee b/src/Monitoring/ReplyPruning.coffee
index 87a67bf83..3c9524f73 100644
--- a/src/Monitoring/ReplyPruning.coffee
+++ b/src/Monitoring/ReplyPruning.coffee
@@ -50,7 +50,7 @@ ReplyPruning =
     ReplyPruning.active = @checked
 
   showIfHidden: (id) ->
-    if ReplyPruning.container?.getElementById id
+    if ReplyPruning.container and $("##{id}", ReplyPruning.container)
       ReplyPruning.inputs.enabled.checked = false
       $.event 'change', null, ReplyPruning.inputs.enabled