diff --git a/features/trace/trace.go b/features/trace/trace.go
index 163a3783..b22382c4 100644
--- a/features/trace/trace.go
+++ b/features/trace/trace.go
@@ -406,7 +406,7 @@ func ParseRawMsg2Html(w http.ResponseWriter, r *http.Request) {
 	if traceData.DecMsg == "" {
 		htmlFile := fmt.Sprintf("traceDecMessage-%d-%d.html", traceData.TaskID, traceData.ID)
 		filePath = config.GetYamlConfig().OMC.FrontTraceDir + "/" + htmlFile
-		command := fmt.Sprintf("/usr/local/omc/bin/data2html -f %s -t %s -i N%d -d %x", filePath, traceData.Timestamp, traceData.IfType, traceData.RawMsg)
+		command := fmt.Sprintf("/usr/local/omc/bin/data2html -f %s -t %d -i N%d -d %x", filePath, traceData.Timestamp, traceData.IfType, traceData.RawMsg)
 		out, err := run.ExecCmd(command, "/")
 		log.Tracef("Exec output: %v", string(out))
 		if err != nil {
diff --git a/lib/dborm/dborm.go b/lib/dborm/dborm.go
index d6206846..58f43567 100644
--- a/lib/dborm/dborm.go
+++ b/lib/dborm/dborm.go
@@ -1740,7 +1740,7 @@ type TraceData struct {
 	IfType    int    `json:"ifType" xorm:"if_type"`
 	MsgType   int    `json:"msgType" xorm:"msg_type"`
 	MsgDirect int    `json:"msgDirect" xorm:"msg_direct"`
-	Timestamp string `json:"timestamp" xorm:"timestamp"`
+	Timestamp int64  `json:"timestamp" xorm:"timestamp"`
 	RawMsg    []byte `json:"rawMsg" xorm:"raw_msg"`
 	DecMsg    string `json:"decMsg" xorm:"dec_msg"`
 }