--- a/widget/windows/GfxInfo.cpp
+++ b/widget/windows/GfxInfo.cpp
@@ -970,23 +970,16 @@ GfxInfo::GetGfxDriverInfo()
       (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorIntel), GfxDriverInfo::allDevices,
       nsIGfxInfo::FEATURE_OPENGL_LAYERS, nsIGfxInfo::FEATURE_DISCOURAGED,
       DRIVER_LESS_THAN, GfxDriverInfo::allDriverVersions );
     APPEND_TO_DRIVER_BLOCKLIST2( DRIVER_OS_ALL,
       (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorIntel), GfxDriverInfo::allDevices,
       nsIGfxInfo::FEATURE_WEBGL_OPENGL, nsIGfxInfo::FEATURE_DISCOURAGED,
       DRIVER_LESS_THAN, GfxDriverInfo::allDriverVersions );
 
-    // Bug 1074378
-    APPEND_TO_DRIVER_BLOCKLIST( DRIVER_OS_ALL,
-      (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorIntel),
-      (GfxDeviceFamily*) GfxDriverInfo::GetDeviceFamily(IntelGMAX4500HD),
-      nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS, nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION,
-      DRIVER_EQUAL, V(8,15,10,1749), "8.15.10.1749");
-
     /**
      * Disable acceleration on Intel HD 3000 for graphics drivers <= 8.15.10.2321.
      * See bug 1018278 and bug 1060736.
      */
     APPEND_TO_DRIVER_BLOCKLIST( DRIVER_OS_ALL,
         (nsAString&) GfxDriverInfo::GetDeviceVendor(VendorIntel), (GfxDeviceFamily*) GfxDriverInfo::GetDeviceFamily(IntelHD3000),
       GfxDriverInfo::allFeatures, nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION,
       DRIVER_LESS_THAN_OR_EQUAL, V(8,15,10,2321), "8.15.10.2342" );