diff --git a/web/src/components/chunk-method-dialog/index.tsx b/web/src/components/chunk-method-dialog/index.tsx
index b793b5646..c7d67411d 100644
--- a/web/src/components/chunk-method-dialog/index.tsx
+++ b/web/src/components/chunk-method-dialog/index.tsx
@@ -220,12 +220,15 @@ export function ChunkMethodDialog({
 
   async function onSubmit(data: z.infer<typeof FormSchema>) {
     console.log('🚀 ~ onSubmit ~ data:', data);
-    const { image_table_context_window, ...parserConfig } = data.parser_config;
-    const imageTableContextWindow = Number(image_table_context_window || 0);
+    const parserConfig = data.parser_config;
+    const imageTableContextWindow = Number(
+      parserConfig?.image_table_context_window || 0,
+    );
     const nextData = {
       ...data,
       parser_config: {
         ...parserConfig,
+        image_table_context_window: imageTableContextWindow,
         image_context_size: imageTableContextWindow,
         table_context_size: imageTableContextWindow,
         // Unset children delimiter if this option is not enabled
diff --git a/web/src/pages/dataset/dataset-setting/saving-button.tsx b/web/src/pages/dataset/dataset-setting/saving-button.tsx
index b02d26966..29a18b492 100644
--- a/web/src/pages/dataset/dataset-setting/saving-button.tsx
+++ b/web/src/pages/dataset/dataset-setting/saving-button.tsx
@@ -73,6 +73,8 @@ export function SavingButton() {
                   ...values,
                   parser_config: {
                     ...values.parser_config,
+                    image_table_context_window:
+                      values.parser_config.image_table_context_window,
                     image_context_size:
                       values.parser_config.image_table_context_window,
                     table_context_size: