diff --git a/lib/rack_session_access/middleware.rb b/lib/rack_session_access/middleware.rb
index 9710346..cebe628 100644
--- a/lib/rack_session_access/middleware.rb
+++ b/lib/rack_session_access/middleware.rb
@@ -111,6 +111,7 @@ def dispatch_action(request)
 
     # Return HTTP method, detect emulated method with _method param
     def request_method(request)
+      return 'GET'                            if request.head?
       return request.request_method           if request.request_method != 'POST'
       return request.params['_method'].upcase if request.params['_method']
       request.request_method