diff --git a/fs/ioctl.c b/fs/ioctl.c
index 090bf47606aba5ec14ff02622e2d1f6c0b723bb2..80ac36aea913b8528d6698c8cb510424b35f3aee 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -173,7 +173,7 @@ int fiemap_prep(struct inode *inode, struct fiemap_extent_info *fieinfo,
 
 	if (*len == 0)
 		return -EINVAL;
-	if (start > maxbytes)
+	if (start >= maxbytes)
 		return -EFBIG;
 
 	/*