diff --git a/tests/tests.cpp b/tests/tests.cpp
index 75d724de..547fcd19 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -330,7 +330,7 @@ test_mknod_ff()
 
   branches.from_string("/tmp/a:/tmp/b");
 
-  mknod(branches,"fifo",S_IFIFO|0777,0);
+  mknod({1000,1000},branches,"fifo",S_IFIFO|0777,0);
 }
 
 TEST_LIST =