diff --git a/core/app_config/AppConfig.cpp b/core/app_config/AppConfig.cpp
index 9a9c00d611..27aa6116cf 100644
--- a/core/app_config/AppConfig.cpp
+++ b/core/app_config/AppConfig.cpp
@@ -40,8 +40,6 @@
 
 using namespace std;
 
-#define ILOGTAIL_PREFIX "ilogtail_"
-#define ILOGTAIL_PIDFILE_SUFFIX ".pid"
 #define LOONGCOLLECTOR_PREFIX "loongcollector_"
 
 #ifdef __ENTERPRISE__