diff --git a/libs/chatchat-server/chatchat/server/file_rag/document_loaders/FilteredCSVloader.py b/libs/chatchat-server/chatchat/server/file_rag/document_loaders/FilteredCSVloader.py
index c1cc6b6bd7..0340619e5f 100644
--- a/libs/chatchat-server/chatchat/server/file_rag/document_loaders/FilteredCSVloader.py
+++ b/libs/chatchat-server/chatchat/server/file_rag/document_loaders/FilteredCSVloader.py
@@ -66,7 +66,7 @@ def __read_file(self, csvfile: TextIOWrapper) -> List[Document]:
                     content.append(f"{col}:{str(row[col])}")
                 else:
                     raise ValueError(
-                        f"Column '{self.columns_to_read[0]}' not found in CSV file."
+                        f"Column '{col}' not found in CSV file."
                     )
             content = "\n".join(content)
             # Extract the source if available