diff --git a/openbsc/src/libmsc/gsm_04_08.c b/openbsc/src/libmsc/gsm_04_08.c
index eea0736..d81dab9 100644
--- a/openbsc/src/libmsc/gsm_04_08.c
+++ b/openbsc/src/libmsc/gsm_04_08.c
@@ -281,6 +281,11 @@
 			release_loc_updating_req(conn);
 			break;
 
+		case GSM_SECURITY_ALREADY:
+			LOGP(DMM, LOGL_ERROR, "We don't expect LOCATION "
+				"UPDATING after CM SERVICE REQUEST\n");
+			/* fall through */
+
 		case GSM_SECURITY_NOAVAIL:
 		case GSM_SECURITY_SUCCEEDED:
 			/* We're all good */