diff --git a/applets/piv/piv.c b/applets/piv/piv.c
index 750a7570..f4292088 100644
--- a/applets/piv/piv.c
+++ b/applets/piv/piv.c
@@ -1065,6 +1065,8 @@ static int piv_get_metadata(const CAPDU *capdu, RAPDU *rapdu) {
       memzero(&key, sizeof(key));
       break;
     }
+    default:
+      EXCEPT(SW_REFERENCE_DATA_NOT_FOUND);
   }
 
   LL = pos;