diff --git a/device_info/device_info.cpp b/device_info/device_info.cpp
index cc8dfb9ff..89947e292 100644
--- a/device_info/device_info.cpp
+++ b/device_info/device_info.cpp
@@ -47,7 +47,7 @@ int AclGetDevUdid(char *udid, int size)
 
 const char *AclGetSerial(void)
 {
-    static char serialNumber[MAX_SERIAL_LEN] = {"1234567890"};
+    static char serialNumber[MAX_SERIAL_LEN] = {0};
 #ifdef PARAM_FEATURE_DEVICEINFO
     std::string result = {};
     OHOS::device_info::DeviceInfoKits &instance = OHOS::device_info::DeviceInfoKits::GetInstance();
@@ -70,4 +70,4 @@ const char *AclGetSerial(void)
 #if __cplusplus
 }
 #endif
-#endif /* __cplusplus */
\ No newline at end of file
+#endif /* __cplusplus */