diff --git a/extensions/inspector/resources/content/viewers/jsObject/jsObject.xul b/extensions/inspector/resources/content/viewers/jsObject/jsObject.xul
index 6916c0b57947..6d7f532440ce 100644
--- a/extensions/inspector/resources/content/viewers/jsObject/jsObject.xul
+++ b/extensions/inspector/resources/content/viewers/jsObject/jsObject.xul
@@ -24,7 +24,7 @@
   </commandset>
   
   <popupset>
-    <popup id="popupContext" onpopupshowing="return viewer.onpopupshowingContext(this)">
+    <popup id="popupContext">
       <menuitem label="&inspectNewWindow.label;" observes="cmdInspectInNewView"/>
       <menuseparator/>
       <menuitem label="&jsCopyValue.label;" observes="cmdCopyValue"/>