diff --git a/openbsc/include/osmocom/gprs/gprs_msgb.h b/openbsc/include/osmocom/gprs/gprs_msgb.h
index eddd888..3567bb7 100644
--- a/openbsc/include/osmocom/gprs/gprs_msgb.h
+++ b/openbsc/include/osmocom/gprs/gprs_msgb.h
@@ -27,4 +27,8 @@
 #define msgb_bcid(__x)		LIBGB_MSGB_CB(__x)->bssgp_cell_id
 #define msgb_llch(__x)		LIBGB_MSGB_CB(__x)->llch
 
+/* logging contexts */
+#define GPRS_CTX_NSVC	0
+#define GPRS_CTX_BVC	1
+
 #endif