diff --git a/include/osmocom/gprs/gprs_bssgp.h b/include/osmocom/gprs/gprs_bssgp.h
index 7077044..d228c53 100644
--- a/include/osmocom/gprs/gprs_bssgp.h
+++ b/include/osmocom/gprs/gprs_bssgp.h
@@ -56,6 +56,8 @@
 	PRIM_NM_BVC_BLOCK,
 	PRIM_NM_BVC_UNBLOCK,
 	PRIM_NM_STATUS,
+
+        PRIM_BSSGP_RIM_PDU_TRANSFER,
 };
 
 struct osmo_bssgp_prim {
diff --git a/include/osmocom/gsm/prim.h b/include/osmocom/gsm/prim.h
index e7a60e3..045e353 100644
--- a/include/osmocom/gsm/prim.h
+++ b/include/osmocom/gsm/prim.h
@@ -16,4 +16,6 @@
 	SAP_BSSGP_PFM,
 
 	SAP_NS,
+
+	SAP_BSSGP_RIM,
 };