diff --git a/libs/langchain/langchain/document_loaders/text.py b/libs/langchain/langchain/document_loaders/text.py
index 2b48115d892..e148e1d4ee0 100644
--- a/libs/langchain/langchain/document_loaders/text.py
+++ b/libs/langchain/langchain/document_loaders/text.py
@@ -43,7 +43,7 @@ class TextLoader(BaseLoader):
             if self.autodetect_encoding:
                 detected_encodings = detect_file_encodings(self.file_path)
                 for encoding in detected_encodings:
-                    logger.debug("Trying encoding: ", encoding.encoding)
+                    logger.debug(f"Trying encoding: {encoding.encoding}")
                     try:
                         with open(self.file_path, encoding=encoding.encoding) as f:
                             text = f.read()