diff --git a/travelogues_extraction/script/script.py b/travelogues_extraction/script/script.py
index 75b056dc2de51d0482c36f49a26d1f30780e066d..74c209a3577e74c26cc1e0a91328bd2b89a65e46 100644
--- a/travelogues_extraction/script/script.py
+++ b/travelogues_extraction/script/script.py
@@ -24,7 +24,7 @@ async def extract(input_file: str, output_folder: str) -> typing.NoReturn:
         output_folder + \
         input_path.name.replace(
             'ALMAoutput', 'script_output_' \
-                          + datetime.datetime.now().strftime("%Y-%m-%d-%H:%M:%S"))
+                          + datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S"))
     )
 
     converter = FromAlmaOutputToExcel(input_file, output_path.absolute(), slice(None, None, 1))