diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index 8c80623a7f..0a1c2d8220 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -146,7 +146,7 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
     backBufferLonLat: null,
 
     /**
-     * Property; backBufferTimerId
+     * Property: backBufferTimerId
      * {Number} The id of the back buffer timer. This timer is used to
      *     delay the removal of the back buffer, thereby preventing
      *     flash effects caused by tile animation.