--- a/gfx/thebes/gfxWindowsNativeDrawing.cpp
+++ b/gfx/thebes/gfxWindowsNativeDrawing.cpp
@@ -302,16 +302,17 @@ gfxWindowsNativeDrawing::PaintToContext(
 
         gfxMatrix m;
         m.Scale(mScale.width, mScale.height);
         pat->SetMatrix(m);
 
         if (mNativeDrawFlags & DO_NEAREST_NEIGHBOR_FILTERING)
             pat->SetFilter(gfxPattern::FILTER_FAST);
 
+        pat->SetExtend(gfxPattern::EXTEND_PAD);
         mContext->SetPattern(pat);
         mContext->Fill();
         mContext->Restore();
 
         mRenderState = RENDER_STATE_DONE;
     } else {
         NS_ERROR("Invalid RenderState in gfxWindowsNativeDrawing::PaintToContext");
     }