diff --git a/api/core/rag/retrieval/dataset_retrieval.py b/api/core/rag/retrieval/dataset_retrieval.py
index d48da0f941..f88e8629f5 100644
--- a/api/core/rag/retrieval/dataset_retrieval.py
+++ b/api/core/rag/retrieval/dataset_retrieval.py
@@ -1003,7 +1003,7 @@ class DatasetRetrieval:
                 filters.append(sqlalchemy_cast(DatasetDocument.doc_metadata[metadata_name].astext, Integer) < value)
             case "after" | ">":
                 filters.append(sqlalchemy_cast(DatasetDocument.doc_metadata[metadata_name].astext, Integer) > value)
-            case "≤" | ">=":
+            case "≤" | "<=":
                 filters.append(sqlalchemy_cast(DatasetDocument.doc_metadata[metadata_name].astext, Integer) <= value)
             case "≥" | ">=":
                 filters.append(sqlalchemy_cast(DatasetDocument.doc_metadata[metadata_name].astext, Integer) >= value)