diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 96336830f035..fc2746e14c42 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2902,7 +2902,7 @@ again:
 			 * in use to avoid freeing it when removing blocks.
 			 */
 			if (sbi->s_cluster_ratio > 1) {
-				pblk = ext4_ext_pblock(ex) + end - ee_block + 2;
+				pblk = ext4_ext_pblock(ex) + end - ee_block + 1;
 				partial_cluster =
 					-(long long) EXT4_B2C(sbi, pblk);
 			}