diff --git a/components/clp-py-utils/clp_py_utils/s3_utils.py b/components/clp-py-utils/clp_py_utils/s3_utils.py
index ddf386268..03717a445 100644
--- a/components/clp-py-utils/clp_py_utils/s3_utils.py
+++ b/components/clp-py-utils/clp_py_utils/s3_utils.py
@@ -12,20 +12,19 @@ def s3_put(
     s3_config: S3Config, src_file: Path, dest_file_name: str, total_max_attempts: int = 3
 ) -> Result[bool, str]:
     """
-    Upload a local file to S3 bucket using AWS's PutObject operation.
-    :param s3_config: S3 configuration specifies the upload destination and credentials.
-    :param src_file: local file to upload.
-    :param dest_file_name: The name for uploaded file in the S3 bucket.
-    :param total_max_attempts: Maximum number of retry attempts for the upload. Defaults to 3.
-    :return: Result.OK(bool) on success.
-             Result.Err(str) with the error message if put operation fails.
+    Uploads a local file to an S3 bucket using AWS's PutObject operation.
+    :param s3_config: S3 configuration specifying the upload destination and credentials.
+    :param src_file: Local file to upload.
+    :param dest_file_name: The name for the uploaded file in the S3 bucket.
+    :param total_max_attempts: Maximum number of retry attempts for the upload.
+    :return: Result.OK(bool) on success, or Result.Err(str) with the error message otherwise.
     """
     if not src_file.exists():
         return Err(f"{src_file} doesn't exist")
     if not src_file.is_file():
         return Err(f"{src_file} is not a file")
     if src_file.stat().st_size > 5 * 1024 * 1024 * 1024:
-        return Err("File size exceeds 5GB limit for single put_object operation")
+        return Err(f"{src_file} is larger than the limit (5GiB) for a single PutObject operation.")
 
     config = Config(retries=dict(total_max_attempts=total_max_attempts, mode="adaptive"))