diff --git a/src/gsm/auth_core.c b/src/gsm/auth_core.c
index f450850..af03ace 100644
--- a/src/gsm/auth_core.c
+++ b/src/gsm/auth_core.c
@@ -210,6 +210,7 @@
 	{ OSMO_AUTH_ALG_COMP128v3, "COMP128v3" },
 	{ OSMO_AUTH_ALG_XOR, "XOR" },
 	{ OSMO_AUTH_ALG_MILENAGE, "MILENAGE" },
+	{ OSMO_AUTH_ALG_XOR_2G, "XOR-2G" },
 	{ 0, NULL }
 };