diff --git a/bsdkm/wolfkmod.c b/bsdkm/wolfkmod.c
index 4e1bceaa1b..2fa3d3ceb4 100644
--- a/bsdkm/wolfkmod.c
+++ b/bsdkm/wolfkmod.c
@@ -665,7 +665,8 @@ static int wolfkdriv_newsession_aes(device_t dev,
 
         break;
     default:
-        return (EOPNOTSUPP);
+        error = (EINVAL);
+        break;
     }
 
 newsession_cipher_out: