diff --git a/components/script/dom/webglrenderingcontext.rs b/components/script/dom/webglrenderingcontext.rs
index bb4ff17133b..52afabeb8bd 100644
--- a/components/script/dom/webglrenderingcontext.rs
+++ b/components/script/dom/webglrenderingcontext.rs
@@ -749,9 +749,11 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
             // case: Chromium currently unbinds, and Gecko silently
             // returns.  The conformance tests don't cover this case.
             Some(renderbuffer) if !renderbuffer.is_deleted() => {
-                renderbuffer.bind(target)
+                self.bound_renderbuffer.set(Some(renderbuffer));
+                renderbuffer.bind(target);
             }
             _ => {
+                self.bound_renderbuffer.set(None);
                 // Unbind the currently bound renderbuffer
                 self.ipc_renderer
                     .send(CanvasMsg::WebGL(WebGLCommand::BindRenderbuffer(target, None)))
diff --git a/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/object-deletion-behaviour.html.ini b/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/object-deletion-behaviour.html.ini
index 3232baffd25..5561797ccd9 100644
--- a/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/object-deletion-behaviour.html.ini
+++ b/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/object-deletion-behaviour.html.ini
@@ -48,9 +48,6 @@
   [WebGL test #45: getError expected: NO_ERROR. Was INVALID_OPERATION : after evaluating: gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCubeMap)]
     expected: FAIL
 
-  [WebGL test #68: gl.getParameter(gl.RENDERBUFFER_BINDING) should be [object WebGLRenderbuffer\]. Was null.]
-    expected: FAIL
-
   [WebGL test #69: gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rbo) threw exception TypeError: gl.framebufferRenderbuffer is not a function]
     expected: FAIL
 
@@ -66,12 +63,6 @@
   [WebGL test #74: gl.isRenderbuffer(rbo) should be false. Threw exception TypeError: gl.isRenderbuffer is not a function]
     expected: FAIL
 
-  [WebGL test #79: gl.getParameter(gl.RENDERBUFFER_BINDING) should be [object WebGLRenderbuffer\]. Was null.]
-    expected: FAIL
-
-  [WebGL test #81: gl.getParameter(gl.RENDERBUFFER_BINDING) should be [object WebGLRenderbuffer\]. Was null.]
-    expected: FAIL
-
   [WebGL test #83: gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, 16, 16) threw exception TypeError: gl.renderbufferStorage is not a function]
     expected: FAIL