diff --git a/Nasal/canvas/gui/dialogs/PropertyTreeBrowser.nas b/Nasal/canvas/gui/dialogs/PropertyTreeBrowser.nas
index 786f02ae3..b9d204b52 100644
--- a/Nasal/canvas/gui/dialogs/PropertyTreeBrowser.nas
+++ b/Nasal/canvas/gui/dialogs/PropertyTreeBrowser.nas
@@ -127,6 +127,7 @@ var PropertyTreeBrowser = {
         },
         
         del: func {
+                me.resetTitleTimer.stop();
                 me.propertyTree.del();
                 me.window.del();
         },