diff --git a/services/local_code_sign/src/local_code_sign_stub.cpp b/services/local_code_sign/src/local_code_sign_stub.cpp
index 0e4bf8a2a4f462fb90add727006427ef6e4f0183..cd3392a1f15da7e56da41764238d5935083705ae 100644
--- a/services/local_code_sign/src/local_code_sign_stub.cpp
+++ b/services/local_code_sign/src/local_code_sign_stub.cpp
@@ -27,8 +27,6 @@
 namespace OHOS {
 namespace Security {
 namespace CodeSign {
-using namespace std;
-
 LocalCodeSignStub::LocalCodeSignStub()
 {
 }