diff --git a/src/components/structures/ScrollPanel.js b/src/components/structures/ScrollPanel.js
index 7f992097bf..f00ff40155 100644
--- a/src/components/structures/ScrollPanel.js
+++ b/src/components/structures/ScrollPanel.js
@@ -190,6 +190,7 @@ module.exports = React.createClass({
     },
 
     onScroll: function(ev) {
+        debuglog("onScroll", this._getScrollNode().scrollTop);
         this._scrollTimeout.restart();
         this._saveScrollState();
         this.checkFillState();