diff --git a/uhdf2/manager/src/devmgr_service_stub.c b/uhdf2/manager/src/devmgr_service_stub.c
index 6fa995210553f6cf7d137ffb1a6aaff3e0f8e2aa..32deb180c0fdf028448094d06f561fa19d81423b 100644
--- a/uhdf2/manager/src/devmgr_service_stub.c
+++ b/uhdf2/manager/src/devmgr_service_stub.c
@@ -84,7 +84,7 @@ static int32_t DevmgrServiceStubDispatchUnloadDevice(struct IDevmgrService *devm
 
 static int32_t DevmgrServiceStubDispatchListAllDevice(struct IDevmgrService *devmgrSvc, struct HdfSBuf *reply)
 {
-    if (devmgrSvc == NULL || reply == NULL) {
+    if (reply == NULL) {
         HDF_LOGE("%{public}s:service name is null", __func__);
         return HDF_ERR_INVALID_PARAM;
     }