diff --git a/gfx/gl/GLContext.cpp b/gfx/gl/GLContext.cpp
index 457f67a0c6c3..bb137fef222a 100644
--- a/gfx/gl/GLContext.cpp
+++ b/gfx/gl/GLContext.cpp
@@ -28,6 +28,10 @@
 #include <CoreServices/CoreServices.h>
 #endif
 
+#if defined(MOZ_WIDGET_COCOA)
+#include "nsCocoaFeatures.h"
+#endif
+
 using namespace mozilla::gfx;
 
 namespace mozilla {
@@ -911,8 +915,10 @@ GLContext::InitExtensions()
 #ifdef XP_MACOSX
     // The Mac Nvidia driver, for versions up to and including 10.8, don't seem
     // to properly support this.  See 814839
+    // this has been fixed in Mac OS X 10.9. See 907946
     if (WorkAroundDriverBugs() &&
-        Vendor() == gl::GLContext::VendorNVIDIA)
+        Vendor() == gl::GLContext::VendorNVIDIA &&
+        !nsCocoaFeatures::OnMavericksOrLater())
     {
         MarkExtensionUnsupported(gl::GLContext::EXT_packed_depth_stencil);
     }
diff --git a/widget/cocoa/nsCocoaFeatures.h b/widget/cocoa/nsCocoaFeatures.h
index 862476fcec11..9ac14690d65c 100644
--- a/widget/cocoa/nsCocoaFeatures.h
+++ b/widget/cocoa/nsCocoaFeatures.h
@@ -14,6 +14,7 @@ public:
   static bool OnLionOrLater();
   static bool OnMountainLionOrLater();
   static bool SupportCoreAnimationPlugins();
+  static bool OnMavericksOrLater();
 
 private:
   static int32_t mOSXVersion;
diff --git a/widget/cocoa/nsCocoaFeatures.mm b/widget/cocoa/nsCocoaFeatures.mm
index 4adfb57e6830..a842458f8d84 100644
--- a/widget/cocoa/nsCocoaFeatures.mm
+++ b/widget/cocoa/nsCocoaFeatures.mm
@@ -7,6 +7,7 @@
 #define MAC_OS_X_VERSION_10_6_HEX 0x00001060
 #define MAC_OS_X_VERSION_10_7_HEX 0x00001070
 #define MAC_OS_X_VERSION_10_8_HEX 0x00001080
+#define MAC_OS_X_VERSION_10_9_HEX 0x00001090
 
 // This API will not work for OS X 10.10, see Gestalt.h.
 
@@ -86,3 +87,9 @@ nsCocoaFeatures::OnMountainLionOrLater()
 {
     return (OSXVersion() >= MAC_OS_X_VERSION_10_8_HEX);
 }
+
+/* static */ bool
+nsCocoaFeatures::OnMavericksOrLater()
+{
+    return (OSXVersion() >= MAC_OS_X_VERSION_10_9_HEX);
+}