diff --git a/src/common/chanopt.c b/src/common/chanopt.c
index 9b7c4f24..1870c99c 100644
--- a/src/common/chanopt.c
+++ b/src/common/chanopt.c
@@ -83,6 +83,7 @@ chanopt_value (guint8 val)
 		return _("{unset}");
 	default:
 		g_assert_not_reached ();
+		return NULL;
 	}
 }