diff --git a/activeresource/lib/active_resource/connection.rb b/activeresource/lib/active_resource/connection.rb
index 0c4ea43..4f653f0 100644
--- a/activeresource/lib/active_resource/connection.rb
+++ b/activeresource/lib/active_resource/connection.rb
@@ -180,7 +180,7 @@ module ActiveResource
       # remote service and resources.
       def http
         http             = Net::HTTP.new(@site.host, @site.port)
-        http.use_ssl     = @site.is_a?(URI::HTTPS)
+        http.use_ssl     = @site.scheme == 'https'
         http.verify_mode = OpenSSL::SSL::VERIFY_NONE if http.use_ssl
         http.read_timeout = @timeout if @timeout # If timeout is not set, the default Net::HTTP timeout (60s) is used.
         http