diff --git a/en/application-dev/reference/apis/js-apis-fileio.md b/en/application-dev/reference/apis/js-apis-fileio.md
index f574cc158968757560d2821e960819e3ea4e9b49..a631fd065c8c27d47a12e507ba739d8c40e8b08c 100644
--- a/en/application-dev/reference/apis/js-apis-fileio.md
+++ b/en/application-dev/reference/apis/js-apis-fileio.md
@@ -1221,7 +1221,7 @@ Synchronously truncates a file based on the file descriptor.
 
 - Example
   ```js
-  fileio.ftruncate(fd, len);
+  fileio.ftruncateSync(fd, len);
   ```
 
 
@@ -1293,7 +1293,7 @@ Synchronously truncates a file based on the file path.
 
 - Example
   ```js
-  fileio.ftruncate(path, len);
+  fileio.truncateSync(path, len);
   ```