diff --git a/app/clients/pinpoint/__init__.py b/app/clients/pinpoint/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/app/clients/sms/__init__.py b/app/clients/sms/__init__.py
index 97639e970..f3a366648 100644
--- a/app/clients/sms/__init__.py
+++ b/app/clients/sms/__init__.py
@@ -13,7 +13,7 @@ class SmsClientResponseException(ClientException):
         self.message = message
 
     def __str__(self):
-        return "Message {}".format(self.message)
+        return f"Message {self.message}"
 
 
 class SmsClient(Client):