diff --git a/content/buffers.js b/content/buffers.js
index dfdbd11d..9d2f111d 100644
--- a/content/buffers.js
+++ b/content/buffers.js
@@ -138,7 +138,7 @@ vimperator.Buffer = function() //{{{
 
     this.__defineGetter__("pageHeight", function()
     {
-        return getBrowser().mPanelContainer.boxObject.height; // FIXME: best way to do this?
+        return window.content.innerHeight;
     });
 
     this.__defineGetter__("textZoom", function()