diff --git a/cleanup/add_volume.py b/cleanup/add_volume.py
index 4aeae0d..26d3eb5 100755
--- a/cleanup/add_volume.py
+++ b/cleanup/add_volume.py
@@ -1,5 +1,6 @@
 #!/usr/bin/python3
 import re
+import sys
 
 import ox
 import ox.api
@@ -7,6 +8,14 @@ import ox.api
 site = 'archive.leftove.rs'
 api = ox.api.signin('https://%s/api/' % site)
 
+if len(sys.argv) > 1:
+    collection = sys.argv[1]
+    conditions = [
+        {'key': 'collection', 'operator': '==', 'value': collection}
+    ]
+else:
+    conditions = []
+
 for regex, fragments in (
     ['Vol. \d+, No. \d+', ['Vol.', 'No.']],
     ['Vol \d+ no \d+', [' Vol ', ' no ']],
@@ -17,7 +26,7 @@ for regex, fragments in (
                 'conditions': [
                     {'key': 'title', 'operator': '=', 'value': fragment}
                     for fragment in fragments
-                ],
+                ] + conditions,
                 'operator': '&'
             },
             'keys': ['id', 'title', 'volume'],