--- a/gfx/thebes/gfxWindowsSurface.cpp
+++ b/gfx/thebes/gfxWindowsSurface.cpp
@@ -55,22 +55,22 @@ gfxWindowsSurface::gfxWindowsSurface(con
     if (!CheckSurfaceSize(size))
         MakeInvalid(size);
 
     cairo_surface_t *surf = cairo_win32_surface_create_with_dib((cairo_format_t)imageFormat,
                                                                 size.width, size.height);
 
     Init(surf);
 
-    RecordMemoryUsed(size.width * size.height * 4 + sizeof(gfxWindowsSurface));
-
-    if (CairoStatus() == 0)
+    if (CairoStatus() == CAIRO_STATUS_SUCCESS) {
         mDC = cairo_win32_surface_get_dc(CairoSurface());
-    else
+        RecordMemoryUsed(size.width * size.height * 4 + sizeof(gfxWindowsSurface));
+    } else {
         mDC = nullptr;
+    }
 }
 
 gfxWindowsSurface::gfxWindowsSurface(HDC dc, const gfxIntSize& realSize, gfxImageFormat imageFormat) :
     mOwnsDC(false), mForPrinting(false), mWnd(nullptr)
 {
     gfxIntSize size(realSize);
     if (!CheckSurfaceSize(size))
         MakeInvalid(size);