diff --git a/lib/checkr/errors/checkr_error.rb b/lib/checkr/errors/checkr_error.rb
index 79250a1..5208716 100644
--- a/lib/checkr/errors/checkr_error.rb
+++ b/lib/checkr/errors/checkr_error.rb
@@ -6,7 +6,7 @@ class CheckrError < StandardError
     attr_reader :json_body
 
     def initialize(message=nil, http_status=nil, http_body=nil, json_body=nil)
-      @message = message
+      @message = message.to_s
       @http_status = http_status
       @http_body = http_body
       @json_body = json_body