diff --git a/test/unittest/param/watcher_agent_unittest.cpp b/test/unittest/param/watcher_agent_unittest.cpp
index 4b3245b3d9254a12f2d49a43e2108f4a3896d655..7b45cbb3ddfd83e7ef959024d9b74cab38e8a861 100644
--- a/test/unittest/param/watcher_agent_unittest.cpp
+++ b/test/unittest/param/watcher_agent_unittest.cpp
@@ -66,7 +66,7 @@ public:
             TestParameterChange, reinterpret_cast<void *>(index));
         EXPECT_EQ(ret, 0);
         ret = SystemWatchParameter("test.permission.watcher.test1*",
-            TestParameterChange,reinterpret_cast<void *>(index));
+            TestParameterChange, reinterpret_cast<void *>(index));
         EXPECT_EQ(ret, 0);
         // repeat add, return fail
         ret = SystemWatchParameter("test.permission.watcher.test1",