diff --git a/AppKit/CPView.j b/AppKit/CPView.j
index 186d1089f..e597cb66a 100644
--- a/AppKit/CPView.j
+++ b/AppKit/CPView.j
@@ -373,9 +373,9 @@ var CPViewFlags                     = { },
 #if PLATFORM(DOM)
     if (_DOMElement.addEventListener)
     {
-        _DOMElement.addEventListener("mouseover", _toolTipFunctionIn, NO);
-        _DOMElement.addEventListener("keypress", _toolTipFunctionOut, NO);
-        _DOMElement.addEventListener("mouseout", _toolTipFunctionOut, NO);
+        _DOMElement.addEventListener("mouseover", _toolTipFunctionIn, YES);
+        _DOMElement.addEventListener("keypress", _toolTipFunctionOut, YES);
+        _DOMElement.addEventListener("mouseout", _toolTipFunctionOut, YES);
     }
     else if (_DOMElement.attachEvent)
     {
@@ -400,9 +400,9 @@ var CPViewFlags                     = { },
 #if PLATFORM(DOM)
     if (_DOMElement.removeEventListener)
     {
-        _DOMElement.removeEventListener("mouseover", _toolTipFunctionIn, NO);
-        _DOMElement.removeEventListener("keypress", _toolTipFunctionOut, NO);
-        _DOMElement.removeEventListener("mouseout", _toolTipFunctionOut, NO);
+        _DOMElement.removeEventListener("mouseover", _toolTipFunctionIn, YES);
+        _DOMElement.removeEventListener("keypress", _toolTipFunctionOut, YES);
+        _DOMElement.removeEventListener("mouseout", _toolTipFunctionOut, YES);
     }
     else if (_DOMElement.detachEvent)
     {