diff --git a/README.md b/README.md
index e9fe210..3c051fa 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,11 @@
 # Standard Notes to Evernote or Joplin
 
-## Use
-
-Rename your exported file as notes.txt, then...
+## Usage:
 
 ```bash
-python3 standard-notes-to-enex.py notes.txt
+python3 standard-notes-to-enex.py SN_Archive.txt
 ```
+If a name like `SN_Archive.txt` is not provided, the script will assume your file is called `notes.txt`.
 
 ## Tutorial
 
diff --git a/standard-notes-to-enex.py b/standard-notes-to-enex.py
index 43375ad..bf8151c 100755
--- a/standard-notes-to-enex.py
+++ b/standard-notes-to-enex.py
@@ -1,7 +1,10 @@
 import json
 import html
+from sys import argv
 
-data = json.load(open('notes.txt'))
+source = argv[1] if len(argv) > 1 else 'notes.txt'
+
+data = json.load(open(source))
 
 
 def text_from_html(title, text):