diff --git a/src/renderer/webgl/WebGLRenderer.js b/src/renderer/webgl/WebGLRenderer.js
index 59e9c0878..2ffda2d3f 100644
--- a/src/renderer/webgl/WebGLRenderer.js
+++ b/src/renderer/webgl/WebGLRenderer.js
@@ -2291,43 +2291,45 @@ var WebGLRenderer = new Class({
      */
     deleteFramebuffer: function (framebuffer)
     {
-        if (framebuffer)
+        if (!framebuffer)
         {
-            var gl = this.gl;
-
-            gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
-
-            // Check for a color attachment and remove it
-            var colorAttachment = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
-
-            if (colorAttachment !== null)
-            {
-                gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, null, 0);
-
-                // TODO: Check if this texture is used elsewhere. If not, delete it:
-                // gl.deleteTexture(colorAttachment);
-            }
-
-            // Check for a depth-stencil attachment and delete it
-            var depthStencilAttachment = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
-
-            if (depthStencilAttachment !== null)
-            {
-                gl.deleteRenderbuffer(depthStencilAttachment);
-            }
-
-            gl.bindFramebuffer(gl.FRAMEBUFFER, null);
-
-            gl.deleteFramebuffer(framebuffer);
-
-            ArrayRemove(this.fboStack, framebuffer);
-
-            if (this.currentFramebuffer === framebuffer)
-            {
-                this.currentFramebuffer = null;
-            }
+            return this;
         }
 
+        var gl = this.gl;
+
+        if (this.currentFramebuffer === framebuffer)
+        {
+            this.currentFramebuffer = null;
+        }
+
+        ArrayRemove(this.fboStack, framebuffer);
+
+        gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+
+        // Check for a color attachment and remove it
+        var colorAttachment = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
+
+        if (colorAttachment !== null)
+        {
+            gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, null, 0);
+
+            // TODO: Check if this texture is used elsewhere. If not, delete it:
+            // gl.deleteTexture(colorAttachment);
+        }
+
+        // Check for a depth-stencil attachment and delete it
+        var depthStencilAttachment = gl.getFramebufferAttachmentParameter(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
+
+        if (depthStencilAttachment !== null)
+        {
+            gl.deleteRenderbuffer(depthStencilAttachment);
+        }
+
+        gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+
+        gl.deleteFramebuffer(framebuffer);
+
         return this;
     },