diff --git a/main.go b/main.go
index 7844f21..39a2d29 100644
--- a/main.go
+++ b/main.go
@@ -1102,7 +1102,7 @@ func getSiteMap(c *gin.Context) {
 		}
 		_ = tWriter.Close()
 	}()
-	c.DataFromReader(http.StatusOK, 0, "application/xml", tReader, nil)
+	c.DataFromReader(http.StatusOK, -1, "application/xml", tReader, nil)
 }
 
 /*