diff --git a/src/gprs/gb_proxy.c b/src/gprs/gb_proxy.c
index fe6a6c6..85c3c47 100644
--- a/src/gprs/gb_proxy.c
+++ b/src/gprs/gb_proxy.c
@@ -348,7 +348,7 @@
 		gprs_gb_parse_bssgp(msgb_bssgph(stored_msg),
 				    msgb_bssgp_len(stored_msg),
 				    &tmp_parse_ctx);
-		gbproxy_patch_bssgp(msg, msgb_bssgph(stored_msg),
+		gbproxy_patch_bssgp(stored_msg, msgb_bssgph(stored_msg),
 				    msgb_bssgp_len(stored_msg),
 				    peer, link_info, &len_change,
 				    &tmp_parse_ctx);