diff --git a/interfaces/native/innerkits/hisysevent_easy/hisysevent_easy.c b/interfaces/native/innerkits/hisysevent_easy/hisysevent_easy.c
index 1302291cfec02d8f4cca97ad4966d8e0ff07b918..a3abbf66b474ce6cade524e90ee802857a8068b4 100644
--- a/interfaces/native/innerkits/hisysevent_easy/hisysevent_easy.c
+++ b/interfaces/native/innerkits/hisysevent_easy/hisysevent_easy.c
@@ -78,7 +78,7 @@ static int InitEventHeader(struct HiSysEventEasyHeader* header, const char* doma
         return ERR_MEM_OPT_FAILED;
     }
     header->type = eventType - 1; // only 2 bits to store event type
-    header->timestamp = GetTimestamp();
+    header->timestamp = (uint64_t)GetTimestamp();
     header->timeZone = ParseTimeZone(timezone);
     header->pid = (uint32_t)getpid();
     header->tid = (uint32_t)gettid();