diff --git a/exporter.py b/exporter.py
index 8aace923519a8833c3ae554a02c3ccb11763e68c..60d3e905728a68a24e59dad277558913b9ec0022 100755
--- a/exporter.py
+++ b/exporter.py
@@ -19,7 +19,7 @@ def fetch_metrics():
 	}
 
 	auth = {
-		'Authorization': f'Bearer {config['token']}'
+		'Authorization': f"Bearer {config['token']}"
 	}
 	room_version_count = {}
 	rooms = requests.get(f"https://{config['synapse_url']}/_synapse/admin/v1/rooms", headers=auth).json()['rooms']