diff --git a/kernel/umount_manager.c b/kernel/umount_manager.c
index bd8be063..8d4ad56a 100644
--- a/kernel/umount_manager.c
+++ b/kernel/umount_manager.c
@@ -5,6 +5,7 @@
 #include <linux/path.h>
 #include <linux/mount.h>
 #include <linux/cred.h>
+#include <linux/fs.h>
 
 #include "klog.h"
 #include "kernel_umount.h"
@@ -350,4 +351,4 @@ int ksu_umount_manager_clear_custom(void)
 
     pr_info("Umount manager: cleared %u custom entries\n", cleared);
     return 0;
-}
\ No newline at end of file
+}