diff --git a/Apewer/Source/SourceUtility.cs b/Apewer/Source/SourceUtility.cs
index f2edb49..d9fdc7e 100644
--- a/Apewer/Source/SourceUtility.cs
+++ b/Apewer/Source/SourceUtility.cs
@@ -900,7 +900,7 @@ namespace Apewer.Source
             if (table == null) return null;
 
             var columns = ToJson(table.Columns);
-            var rows = ToJson(table.Rows);
+            var rows = ToJson(table.Rows, dateTimeFormatter);
 
             var jsonObject = Json.NewObject();
             jsonObject.SetProperty("columns", columns);