diff --git a/lib/ace/edit_session.js b/lib/ace/edit_session.js
index 1b853c71..fc4a3fcf 100644
--- a/lib/ace/edit_session.js
+++ b/lib/ace/edit_session.js
@@ -106,11 +106,11 @@ var EditSession = function(text, mode) {
     };
 
     this.$resetRowCache = function(row) {
-        var rowCache = this.$rowCache;
         if (row == 0) {
-            rowCache = [];
+            this.$rowCache = [];
             return;
         }
+        var rowCache = this.$rowCache;
         for (var i = 0; i < rowCache.length; i++) {
             if (rowCache[i].docRow >= row) {
                 rowCache.splice(i, rowCache.length);