diff --git a/lib/merb-core/test/helpers/request_helper.rb b/lib/merb-core/test/helpers/request_helper.rb
index 8e283f6b..e69e018a 100644
--- a/lib/merb-core/test/helpers/request_helper.rb
+++ b/lib/merb-core/test/helpers/request_helper.rb
@@ -97,6 +97,7 @@ def fake_request(env = {}, opt = {})
       #---
       # @public
       def dispatch_to(controller_klass, action, params = {}, env = {}, &blk)
+        action = action.to_s
         request_body = { :post_body => env[:post_body], :req => env[:req] }
         request = fake_request(env.merge(
           :query_string => Merb::Request.params_to_query_string(params)), request_body)