diff --git a/docs/api/renderers/webgl/WebGLProgram.html b/docs/api/renderers/webgl/WebGLProgram.html
index 097c6f5d50583f1de8e502d29534984dfe89620f..8115c6080de6ac10ec60fdd0345986c7765564a9 100644
--- a/docs/api/renderers/webgl/WebGLProgram.html
+++ b/docs/api/renderers/webgl/WebGLProgram.html
@@ -139,11 +139,6 @@
 		Returns a name-value mapping of all active vertex attribute locations.
 		</div>
 
-		<h3>[method:Array getAttributesKeys]()</h3>
-		<div>
-		Returns an array of all active vertex attribute names.
-		</div>
-
 		<h2>Source</h2>
 
 		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
diff --git a/src/renderers/webgl/WebGLProgram.js b/src/renderers/webgl/WebGLProgram.js
index 136a44c7aefaea2c2d8fb24a4d9a883c4659a88a..9c5e977deb7b0da5c1e1c7fe2818959eddb2f844 100644
--- a/src/renderers/webgl/WebGLProgram.js
+++ b/src/renderers/webgl/WebGLProgram.js
@@ -409,26 +409,16 @@ THREE.WebGLProgram = ( function () {
 		// set up caching for attribute keys and locations
 
 		var getAttributes = function() { return this._cachedAttributes; };
-		var getAttribKeys = function() { return this._cachedAttribKeys; };
 
 		this.getAttributes = function() {
 
 			var attributes = fetchAttributeLocations( gl, program );
 			this._cachedAttributes = attributes;
-			this._cachedAttribKeys = Object.keys( attributes );
 			this.getAttributes = getAttributes;
-			this.getAttributesKeys = getAttribKeys;
 			return attributes;
 
 		};
 
-		this.getAttributesKeys = function() {
-
-			this.attributes();
-			return this._cachedAttribKeys;
-
-		};
-
 		//
 
 		this.id = programIdCount ++;