diff --git a/sys/ufs/ffs/ffs_rawread.c b/sys/ufs/ffs/ffs_rawread.c
index 21858323a0b..66449a73b06 100644
--- a/sys/ufs/ffs/ffs_rawread.c
+++ b/sys/ufs/ffs/ffs_rawread.c
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
 #include <ufs/ufs/quota.h>
 #include <ufs/ufs/inode.h>
 #include <ufs/ufs/ufsmount.h>
+#include <ufs/ufs/ufs_extern.h>
 #include <ufs/ffs/fs.h>
 
 #include <vm/vm.h>