diff --git a/kernel/common/los_config.c b/kernel/common/los_config.c
index a9b78390..f851a7cd 100644
--- a/kernel/common/los_config.c
+++ b/kernel/common/los_config.c
@@ -130,7 +130,6 @@ extern "C" {
 #endif /* __cplusplus */
 
 extern UINT32 OsSystemInit(VOID);
-extern VOID SystemInit(VOID);
 
 VOID __attribute__((weak)) SystemInit(VOID)
 {