diff --git a/content/canvas/src/WebGLContextGL.cpp b/content/canvas/src/WebGLContextGL.cpp
index 32b046e2902..d8b5b2532fc 100644
--- a/content/canvas/src/WebGLContextGL.cpp
+++ b/content/canvas/src/WebGLContextGL.cpp
@@ -4954,9 +4954,8 @@ WebGLContext::CompileShader(WebGLShader *shader)
             compileOptions |= SH_OBJECT_CODE
                             | SH_MAP_LONG_VARIABLE_NAMES;
 #ifdef XP_MACOSX
-            // work around bug 665578
+            // work around bug 665578 and bug 769810
             if (gl->WorkAroundDriverBugs() &&
-                !nsCocoaFeatures::OnLionOrLater() &&
                 gl->Vendor() == gl::GLContext::VendorATI)
             {
                 compileOptions |= SH_EMULATE_BUILT_IN_FUNCTIONS;