diff --git a/lib/authy/config.rb b/lib/authy/config.rb
index f34a157..666ef7c 100644
--- a/lib/authy/config.rb
+++ b/lib/authy/config.rb
@@ -14,7 +14,7 @@ def api_uri=(uri)
     alias :api_url= :api_key=
 
     def api_uri
-      @api_uri
+      @api_uri || "https://api.authy.com"
     end
     alias :api_url :api_uri
   end