diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 88f62902b25..d52e273514d 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -1241,7 +1241,8 @@ fallback_copy_texsubimage(struct gl_context *ctx, GLenum target, GLint level,
 
    src_trans = pipe_get_transfer(pipe,
                                  strb->texture,
-                                 0, 0,
+                                 strb->rtt_level,
+                                 strb->rtt_face + strb->rtt_slice,
                                  PIPE_TRANSFER_READ,
                                  srcX, srcY,
                                  width, height);