diff --git a/test/unittest/param/watcher_agent_unittest.cpp b/test/unittest/param/watcher_agent_unittest.cpp
index effd73a006bd1f65839f7a083f15584a259c2605..e0c82917c6a88ed050ec4e9b0c3391e82e77f2b2 100644
--- a/test/unittest/param/watcher_agent_unittest.cpp
+++ b/test/unittest/param/watcher_agent_unittest.cpp
@@ -33,11 +33,12 @@ using namespace std;
 using namespace OHOS;
 using namespace OHOS::init_param;
 
-void TestParameterChange(const char *key, const char *value, void *context)
+static void TestParameterChange(const char *key, const char *value, void *context)
 {
     printf("TestParameterChange key:%s %s", key, value);
 }
-void TestWatcherCallBack(const char *key, ServiceStatus status)
+
+static void TestWatcherCallBack(const char *key, ServiceStatus status)
 {
     printf("TestWatcherCallBack key:%s %d", key, status);
 }