diff --git a/lib/rspec_api_documentation/dsl/endpoint.rb b/lib/rspec_api_documentation/dsl/endpoint.rb
index 6373b633..222392c7 100644
--- a/lib/rspec_api_documentation/dsl/endpoint.rb
+++ b/lib/rspec_api_documentation/dsl/endpoint.rb
@@ -52,8 +52,7 @@ def query_string
     end
 
     def params
-      return unless example.metadata[:parameters]
-      parameters = example.metadata[:parameters].inject({}) do |hash, param|
+      parameters = example.metadata.fetch(:parameters, {}).inject({}) do |hash, param|
         set_param(hash, param)
       end
       parameters.merge!(extra_params)
diff --git a/spec/dsl_spec.rb b/spec/dsl_spec.rb
index 5902665e..207e9d6f 100644
--- a/spec/dsl_spec.rb
+++ b/spec/dsl_spec.rb
@@ -357,6 +357,18 @@
     end
   end
 
+  context "request with only extra params" do
+    post "/orders" do
+      context "extra options for do_request" do
+        before do
+          client.should_receive(:post).with("/orders", {"order_type" => "big"}, nil)
+        end
+
+        example_request "should take an optional parameter hash", :order_type => "big"
+      end
+    end
+  end
+
   context "last_response helpers" do
     put "/orders" do
       it "status" do