diff --git a/gfx/thebes/gfxWindowsPlatform.cpp b/gfx/thebes/gfxWindowsPlatform.cpp
index 81e1878a6e4..2a25068c6f1 100755
--- a/gfx/thebes/gfxWindowsPlatform.cpp
+++ b/gfx/thebes/gfxWindowsPlatform.cpp
@@ -1793,6 +1793,7 @@ void CheckIfRenderTargetViewNeedsRecreating(ID3D11Device *device)
     // match the clear
     if (resultColor != 0xffffff00) {
         gfxCriticalNote << "RenderTargetViewNeedsRecreating";
+        gANGLESupportsD3D11 = false;
     }
 
     keyedMutex->ReleaseSync(0);