diff --git a/en/device-dev/driver/driver-hdf-sample.md b/en/device-dev/driver/driver-hdf-sample.md
index 84f018350e59239cda78ef7628f07d3a9d2c358c..93d1e3a03ba915957b9de7e0f34e83cf87e52d0b 100644
--- a/en/device-dev/driver/driver-hdf-sample.md
+++ b/en/device-dev/driver/driver-hdf-sample.md
@@ -82,7 +82,7 @@ int32_t HdfSampleDriverDispatch(
 
 void HdfSampleDriverRelease(struct HdfDeviceObject *deviceObject)
 {
-    // release resources here
+    // Release resources.
     return;
 }