diff --git a/src/gsm/rsl.c b/src/gsm/rsl.c
index aeab1aa..83097fd 100644
--- a/src/gsm/rsl.c
+++ b/src/gsm/rsl.c
@@ -380,6 +380,7 @@
 	{ RSL_MT_IPAC_DLCX,		"IPAC_DLCX" },
 	{ RSL_MT_IPAC_DLCX_ACK,		"IPAC_DLCX_ACK" },
 	{ RSL_MT_IPAC_DLCX_NACK,	"IPAC_DLCX_NACK" },
+	{ RSL_MT_IPAC_DIR_RETR_ENQ,	"IPAC_DIR_RETR_ENQ" },
 	{ 0, NULL }
 };