diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index d6d55b9..323875f 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -56,7 +56,7 @@
 struct ext2_inode *g_parent_inode;
 static int symlinknest;
 
-#if defined(CONFIG_CMD_EXT4_WRITE)
+#if defined(CONFIG_EXT4_WRITE)
 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n)
 {
 	uint32_t res = size / n;