diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index f5b4385b3..d2c924cf7 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -1363,7 +1363,7 @@ Zotero.Utilities.Internal.activate = new function() {
 		}
 		XFree(res[0]);
 		
-		return foundWindow;
+		return false;
 	}
 	
 	/**