diff --git a/src/event.js b/src/event.js
index f7a6cb94..a3801306 100644
--- a/src/event.js
+++ b/src/event.js
@@ -287,7 +287,7 @@ jQuery.event = {
 		if ( event.pageX == null && event.clientX != null ) {
 			var doc = document.documentElement, body = document.body;
 			event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc.clientLeft || 0);
-			event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc.clientLeft || 0);
+			event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc.clientTop || 0);
 		}
 			
 		// Add which for key events