diff --git a/lib/omniauth/strategies/linkedin.rb b/lib/omniauth/strategies/linkedin.rb
index 1b16934..e48daab 100755
--- a/lib/omniauth/strategies/linkedin.rb
+++ b/lib/omniauth/strategies/linkedin.rb
@@ -45,7 +45,7 @@ class LinkedIn < OmniAuth::Strategies::OAuth2
       end
 
       def callback_url
-        full_host + script_name + callback_path
+        options[:callback_url] || (full_host + script_name + callback_path)
       end
 
       alias :oauth2_access_token :access_token