diff --git a/services/cert_manager_standard/cert_manager_engine/main/core/src/cert_manager.c b/services/cert_manager_standard/cert_manager_engine/main/core/src/cert_manager.c
index 7618d392172f728bdb6c26a9f2542e5e86fed2c2..5d192f7ff690dabd0147f0a3fdb7c29a31ad6aac 100644
--- a/services/cert_manager_standard/cert_manager_engine/main/core/src/cert_manager.c
+++ b/services/cert_manager_standard/cert_manager_engine/main/core/src/cert_manager.c
@@ -35,6 +35,7 @@
 
 #include "hks_api.h"
 
+// LCOV_EXCL_START
 #define MAX_PATH_LEN                        256
 
 #ifdef __cplusplus
@@ -745,4 +746,5 @@ int32_t CmRemoveBackupUserCert(const struct CmContext *context, const struct CmB
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
+// LCOV_EXCL_STOP
\ No newline at end of file