diff --git a/backend/corpora/jewishmigration/jewishmigration.py b/backend/corpora/jewishmigration/jewishmigration.py
index e486d0dac..16b0ee00a 100644
--- a/backend/corpora/jewishmigration/jewishmigration.py
+++ b/backend/corpora/jewishmigration/jewishmigration.py
@@ -63,7 +63,7 @@ class JewishMigration(PeacePortal, JSONCorpusDefinition):
     def sources(self, start, end):
         if self.data_url:
             if self.data_api_key:
-                headers = {'Authorization': f'Token {self.api_key}'}
+                headers = {"Authorization": f"Token {self.data_api_key}"}
                 response = requests.get(self.data_url, headers=headers)
             else:
                 response = requests.get(self.data_url)
@@ -77,7 +77,6 @@ def sources(self, start, end):
         for source in list_of_sources:
             yield source
 
-
     def __init__(self):
         super().__init__()
         self._id.extractor = extract.JSON(key='source')