diff --git a/library/psa_crypto_driver_wrappers.c b/library/psa_crypto_driver_wrappers.c
index d2c2b78..a89b9d2 100644
--- a/library/psa_crypto_driver_wrappers.c
+++ b/library/psa_crypto_driver_wrappers.c
@@ -125,7 +125,7 @@
         default:
             /* Key is declared with a lifetime not known to us */
             (void)status;
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            break;
     }
 
     return( psa_sign_message_builtin( attributes,
@@ -197,7 +197,7 @@
         default:
             /* Key is declared with a lifetime not known to us */
             (void)status;
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            break;
     }
 
     return( psa_verify_message_builtin( attributes,