diff --git a/tests/tests.cpp b/tests/tests.cpp
index f9a27715..83c5b585 100644
--- a/tests/tests.cpp
+++ b/tests/tests.cpp
@@ -4,6 +4,8 @@
 #include "str.hpp"
 #include "error.hpp"
 
+#include "func_mknod_ff.hpp"
+
 
 void
 test_nop()