diff --git a/lemur/manage.py b/lemur/manage.py
index 90d59224..5164474d 100755
--- a/lemur/manage.py
+++ b/lemur/manage.py
@@ -299,7 +299,7 @@ class InitializeApp(Command):
         sys.stdout.write("[+] Creating expiration email notifications!\n")
         sys.stdout.write("[!] Using {recipients} as specified by LEMUR_SECURITY_TEAM_EMAIL for notifications\n")
 
-        intervals = current_app.config.get("LEMUR_DEFAULT_EXPIRATION_NOTIFICATION_INTERVALS")
+        intervals = current_app.config.get("LEMUR_DEFAULT_EXPIRATION_NOTIFICATION_INTERVALS", [])
         sys.stdout.write(
             "[!] Creating {num} notifications for {intervals} days as specified by LEMUR_DEFAULT_EXPIRATION_NOTIFICATION_INTERVALS\n".format(
                 num=len(intervals),