diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index de55c08..ce0d5ec 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -585,7 +585,7 @@
 	__detach_extent_node(sbi, et, en);
 
 	/* 2. if extent can be split more, split and insert the left part */
-	if (dei.len > 1) {
+	if (dei.len > F2FS_MIN_EXTENT_LEN) {
 		/*  insert left part of split extent into cache */
 		if (fofs - dei.fofs >= F2FS_MIN_EXTENT_LEN) {
 			set_extent_info(&ei, dei.fofs, dei.blk,