diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index 8f169def..24d4bd06 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -300,10 +300,10 @@ var VirtualRenderer = function(container, theme) {
             this.resizing++;
         else
             this.resizing = force ? 1 : 0;
-        
         if (!height)
             height = dom.getInnerHeight(this.container);
-        if (force || size.height != height) {
+
+        if (height && (force || size.height != height)) {
             size.height = height;
 
             this.scroller.style.height = height + "px";
@@ -318,7 +318,8 @@ var VirtualRenderer = function(container, theme) {
 
         if (!width)
             width = dom.getInnerWidth(this.container);
-        if (force || this.resizing > 1 || size.width != width) {
+
+        if (width && (force || this.resizing > 1 || size.width != width)) {
             size.width = width;
 
             var gutterWidth = this.showGutter ? this.$gutter.offsetWidth : 0;