diff --git a/zh-cn/device-dev/driver/driver-hdf-sample.md b/zh-cn/device-dev/driver/driver-hdf-sample.md
index 8e6d6589448c45e0b33fee250b97f1deff4ef839..d6f439cfe6b520bef6d30307380735cab28da250 100644
--- a/zh-cn/device-dev/driver/driver-hdf-sample.md
+++ b/zh-cn/device-dev/driver/driver-hdf-sample.md
@@ -64,7 +64,7 @@ root {
 #define SAMPLE_WRITE_READ 123
 
 int32_t HdfSampleDriverDispatch(
-    struct HdfDeviceObject *deviceObject, int id, struct HdfSBuf *data, struct HdfSBuf *reply)
+    struct HdfDeviceIoClient *deviceObject, int id, struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     HDF_LOGE("%s: received cmd %d", __func__, id);
     if (id == SAMPLE_WRITE_READ) {