diff --git a/fs/ioctl.c b/fs/ioctl.c
index 4e6cc0a7d69c9f27e3b900b2dad72f7904cc90c4..7bcc60091287c75460c8713267c355ce6bdb0a7a 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -170,7 +170,7 @@ int fiemap_prep(struct inode *inode, struct fiemap_extent_info *fieinfo,
 
 	if (*len == 0)
 		return -EINVAL;
-	if (start > maxbytes)
+	if (start >= maxbytes)
 		return -EFBIG;
 
 	/*