diff --git a/tests/incremental/00-justglob.c b/tests/incremental/00-justglob.c
index 55c1e2271..ec1c6d041 100644
--- a/tests/incremental/00-justglob.c
+++ b/tests/incremental/00-justglob.c
@@ -1,2 +1,2 @@
-int max_domains = 0;
+int max_domains = 4;
 main() {}