diff --git a/Userland/Libraries/LibC/grp.h b/Userland/Libraries/LibC/grp.h
index c2b3c89cbc..1acc7dee92 100644
--- a/Userland/Libraries/LibC/grp.h
+++ b/Userland/Libraries/LibC/grp.h
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <bits/FILE.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>