diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c
index af95c7aeea..5126f94607 100644
--- a/dlls/gdiplus/graphics.c
+++ b/dlls/gdiplus/graphics.c
@@ -384,7 +384,12 @@ static GpStatus alpha_blend_bmp_pixels(GpGraphics *graphics, INT dst_x, INT dst_
             src_color = ((ARGB*)(src + src_stride * y))[x];
 
             if (comp_mode == CompositingModeSourceCopy)
-                GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, src_color);
+            {
+                if (!(src_color & 0xff000000))
+                    GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, 0);
+                else
+                    GdipBitmapSetPixel(dst_bitmap, x+dst_x, y+dst_y, src_color);
+            }
             else
             {
                 if (!(src_color & 0xff000000))
diff --git a/dlls/gdiplus/tests/image.c b/dlls/gdiplus/tests/image.c
index bbb9365edb..0b4ae3cd9c 100644
--- a/dlls/gdiplus/tests/image.c
+++ b/dlls/gdiplus/tests/image.c
@@ -4491,7 +4491,7 @@ static void test_DrawImage_SourceCopy(void)
     expect(0, dst_pixels[0]);
     expect(0xffff0000, dst_pixels[1]);
     expect(0, dst_pixels[2]);
-    todo_wine expect(0, dst_pixels[3]);
+    expect(0, dst_pixels[3]);
 
     status = GdipDeleteGraphics(graphics);
     expect(Ok, status);