diff --git a/common/settings.py b/common/settings.py
index 276ac3f49..9df0c0cd2 100644
--- a/common/settings.py
+++ b/common/settings.py
@@ -139,7 +139,7 @@ def _get_or_create_secret_key():
     import logging
 
     new_key = secrets.token_hex(32)
-    logging.warning(f"SECURITY WARNING: Using auto-generated SECRET_KEY.")
+    logging.warning("SECURITY WARNING: Using auto-generated SECRET_KEY.")
     return new_key
 
 class StorageFactory: