diff --git a/services/init/standard/switch_root.c b/services/init/standard/switch_root.c
index 33a2a9eeb9e86425a2bf74ed7acda982ac29afc5..6cc3df2e0cbca603d9db22feadd9efe99122f602 100755
--- a/services/init/standard/switch_root.c
+++ b/services/init/standard/switch_root.c
@@ -140,7 +140,6 @@ static void FreeRootDir(DIR *oldRoot, dev_t dev)
     if (oldRoot != NULL) {
         FreeOldRoot(oldRoot, dev);
         closedir(oldRoot);
-        oldRoot = NULL;
     }
 }
 
diff --git a/services/param/manager/param_manager.c b/services/param/manager/param_manager.c
index 6196f4badacd7761f3e47d6841021b52c848de27..1cc40a4dd88342e3585d74d459609b99c7dcd870 100755
--- a/services/param/manager/param_manager.c
+++ b/services/param/manager/param_manager.c
@@ -76,7 +76,7 @@ int InitParamWorkSpace(ParamWorkSpace *workSpace, int onlyRead)
 
 void CloseParamWorkSpace(ParamWorkSpace *workSpace)
 {
-     PARAM_CHECK(workSpace != NULL, return, "Invalid workSpace");
+    PARAM_CHECK(workSpace != NULL, return, "Invalid workSpace");
     CloseWorkSpace(&workSpace->paramSpace);
     if (workSpace->paramSecurityOps.securityFreeLabel != NULL) {
         workSpace->paramSecurityOps.securityFreeLabel(workSpace->securityLabel);
diff --git a/test/unittest/init/cmds_unittest.cpp b/test/unittest/init/cmds_unittest.cpp
index 2669ca5a7ed38de860de0bac8af4a09fdc14c4a3..8cd9174bc1d43058633e8fa8d3573f46c1e391a2 100755
--- a/test/unittest/init/cmds_unittest.cpp
+++ b/test/unittest/init/cmds_unittest.cpp
@@ -178,7 +178,7 @@ HWTEST_F(CmdsUnitTest, TestCommonWrite, TestSize.Level1)
     const int bufLen = 50;
     char buffer[bufLen];
     int length = read(fd, buffer, bufLen - 1);
-    EXPECT_EQ(length, strlen("aaa"));   
+    EXPECT_EQ(length, strlen("aaa"));
     close(fd);
     fd = -1;
     // abnormal