diff --git a/fs/smartfs/smartfs_utils.c b/fs/smartfs/smartfs_utils.c
index da37b922124..99bb8c16567 100644
--- a/fs/smartfs/smartfs_utils.c
+++ b/fs/smartfs/smartfs_utils.c
@@ -2072,7 +2072,7 @@ int smartfs_extendfile(FAR struct smartfs_mountpt_s *fs,
   ret = OK;
 
 errout_with_buffer:
-#ifdef CONFIG_SMARTFS_USE_SECTOR_BUFFER
+#ifndef CONFIG_SMARTFS_USE_SECTOR_BUFFER
   /* Release the allocated buffer */
 
   kmm_free(buffer);