diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index cf194a937fc..6177ac63f03 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -1098,6 +1098,10 @@ st_copy_texsubimage(GLcontext *ctx,
                                                 stImage->face, stImage->level,
                                                 destZ,
                                                 PIPE_BUFFER_USAGE_GPU_WRITE);
+         if (do_flip)
+            srcY = strb->surface->height - srcY - height;
+
+         /* for surface_copy(), y=0=top, always */
          pipe->surface_copy(pipe,
                             do_flip,
                             /* dest */