diff --git a/src/gprs/gb_proxy_patch.c b/src/gprs/gb_proxy_patch.c
index 210fb2b..bee3150 100644
--- a/src/gprs/gb_proxy_patch.c
+++ b/src/gprs/gb_proxy_patch.c
@@ -23,13 +23,14 @@
 #include <openbsc/gprs_utils.h>
 #include <openbsc/gprs_gb_parse.h>
 
-#include <openbsc/gsm_data.h>
 #include <openbsc/debug.h>
 
 #include <osmocom/gprs/protocol/gsm_08_18.h>
 #include <osmocom/core/rate_ctr.h>
 #include <osmocom/gsm/apn.h>
 
+extern void *tall_bsc_ctx;
+
 /* patch RA identifier in place */
 static void gbproxy_patch_raid(uint8_t *raid_enc, struct gbproxy_peer *peer,
 			       int to_bss, const char *log_text)