diff --git a/lib/cent/http.rb b/lib/cent/http.rb
index aa7e407..b665c3f 100644
--- a/lib/cent/http.rb
+++ b/lib/cent/http.rb
@@ -12,7 +12,7 @@ class ResponseError < Error
 
     def initialize(code:, message:)
       @code = code
-      super message
+      super(message)
     end
   end