diff --git a/packages/service/core/workflow/dispatch/dataset/search.ts b/packages/service/core/workflow/dispatch/dataset/search.ts
index 82473e2ff..6169e0e38 100644
--- a/packages/service/core/workflow/dispatch/dataset/search.ts
+++ b/packages/service/core/workflow/dispatch/dataset/search.ts
@@ -177,7 +177,7 @@ export async function dispatchDatasetSearch(
   });
   // Rerank
   const { totalPoints: reRankTotalPoints, modelName: reRankModelName } = formatModelChars2Points({
-    model: rerankModelData.model,
+    model: rerankModelData?.model,
     inputTokens: reRankInputTokens,
     modelType: ModelTypeEnum.rerank
   });