diff --git a/lib/proxifier/proxy.rb b/lib/proxifier/proxy.rb
index 0bbb1b6..4b75fab 100644
--- a/lib/proxifier/proxy.rb
+++ b/lib/proxifier/proxy.rb
@@ -16,7 +16,7 @@ def proxify?(host, no_proxy = nil)
     attr_reader :url, :options
 
     def initialize(url, options = {})
-      url = URI.parse(uri) unless url.is_a?(URI::Generic)
+      url = URI.parse(url) unless url.is_a?(URI::Generic)
       @url, @options = url, options
     end