diff --git a/routers/api/v1/repo/repo_dashbord.go b/routers/api/v1/repo/repo_dashbord.go
index 127587ddb..2ecb39b9f 100644
--- a/routers/api/v1/repo/repo_dashbord.go
+++ b/routers/api/v1/repo/repo_dashbord.go
@@ -205,6 +205,7 @@ func ServeAllProjectsPeriodStatisticsFile(ctx *context.Context) {
 
 	}
 	f.SetActiveSheet(index)
+	f.DeleteSheet("Sheet1")
 
 	if err := f.SaveAs(fileName); err != nil {
 		log.Error("Can not generate file.", err)