diff --git a/scripts/msnet_add_id/script.py b/scripts/msnet_add_id/script.py
index 2b5518c..64cff0e 100644
--- a/scripts/msnet_add_id/script.py
+++ b/scripts/msnet_add_id/script.py
@@ -2,22 +2,23 @@
 
 from inspirehep.curation.search_check_do import SearchCheckDo
 
-URL = 'https://cernbox.cern...msnet_add_id.txt'
+URL = "https://cernbox.cern...msnet_add_id.txt"
 MSNET_IDS = requests.get(URL)
 
-ELEMENT = 'external_system_identifiers'
+ELEMENT = "external_system_identifiers"
+
 
 class AddMsnetIds(SearchCheckDo):
     """Add MSNET IDs to INSPIRE records."""
 
-    query = f'tc:p -{ELEMENT}.schema:MSNET'
+    query = f"tc:p -{ELEMENT}.schema:MSNET"
 
     @staticmethod
     def check(record, logger, state):
-        if record.get_value('control_number') not in MSNET_IDS:
+        if record.get_value("control_number") not in MSNET_IDS:
             return True
-        for schema in record.get_value(f'{ELEMENT}.schema', []):
-            if schema == 'MSNET':
+        for schema in record.get_value(f"{ELEMENT}.schema", []):
+            if schema == "MSNET":
                 return True
         return False
 
@@ -25,7 +26,7 @@ def check(record, logger, state):
     def do(record, logger, state):
         record.setdefault(ELEMENT, []).append(
             {
-                "value": MSNET_IDS[record.get_value('control_number')],
+                "value": MSNET_IDS[record.get_value("control_number")],
                 "schema": "MSNET",
             }
         )