diff --git a/src/xz/main.c b/src/xz/main.c
index d74caf37..ca8a4680 100644
--- a/src/xz/main.c
+++ b/src/xz/main.c
@@ -326,5 +326,5 @@ main(int argc, char **argv)
 	if (es == E_WARNING && no_warn)
 		es = E_SUCCESS;
 
-	tuklib_exit(es, E_ERROR, message_verbosity_get() != V_SILENT);
+	tuklib_exit((int)es, E_ERROR, message_verbosity_get() != V_SILENT);
 }