diff --git a/lib/trailblazer/endpoint/runtime.rb b/lib/trailblazer/endpoint/runtime.rb
index 4561fb8..bef30f3 100644
--- a/lib/trailblazer/endpoint/runtime.rb
+++ b/lib/trailblazer/endpoint/runtime.rb
@@ -5,7 +5,7 @@ module Runtime
 
       # We run the Adapter here, which in turn will run your business operation, then the matcher
       # or whatever you have configured.
-      def call(protocol, ctx, flow_options: {}, matcher_context:, default_matcher:, matcher_extension: Matcher.Extension(), &block) # TODO: test {flow_options}
+      def call(activity, ctx, flow_options: {}, matcher_context:, default_matcher:, matcher_extension: Matcher.Extension(), &block) # TODO: test {flow_options}
         matcher = Trailblazer::Endpoint::Matcher::DSL.new.instance_exec(&block)
 
         matcher_value = Trailblazer::Endpoint::Matcher::Value.new(default_matcher, matcher, matcher_context)
@@ -18,11 +18,11 @@ def call(protocol, ctx, flow_options: {}, matcher_context:, default_matcher:, ma
 
         pipeline = Activity::TaskWrap::Pipeline.new(in_extension + [matcher_extension]) # DISCUSS: how and where to run the matcher, especially with an protocol.
 
-        container_activity = Activity::TaskWrap.container_activity_for(protocol, wrap_static: pipeline)
+        container_activity = Activity::TaskWrap.container_activity_for(activity, wrap_static: pipeline)
 
         # Trailblazer::Activity::TaskWrap.invoke( # FIXME: run Advance using this, not its own wtf?/call invocation.
         Trailblazer::Developer.wtf?( # FIXME: run Advance using this, not its own wtf?/call invocation.
-          protocol,
+          activity,
           [
             ctx,
             flow_options.merge(matcher_value: matcher_value) # matchers will be executed in Adapter's taskWrap.
@@ -30,7 +30,7 @@ def call(protocol, ctx, flow_options: {}, matcher_context:, default_matcher:, ma
 
           container_activity: container_activity,
           exec_context: self,
-          # wrap_runtime: {protocol => ->(*) { snippet }} # TODO: use wrap_runtime once https://github.com/trailblazer/trailblazer-developer/issues/46 is fixed.
+          # wrap_runtime: {activity => ->(*) { snippet }} # TODO: use wrap_runtime once https://github.com/trailblazer/trailblazer-developer/issues/46 is fixed.
         )
       end
     end # Runtime
diff --git a/test/runtime_test.rb b/test/runtime_test.rb
index 26c2e80..86657f6 100644
--- a/test/runtime_test.rb
+++ b/test/runtime_test.rb
@@ -23,7 +23,7 @@ class Protocol < Trailblazer::Endpoint::Protocol
     include T.def_steps(:authenticate, :policy)
   end
 
-  it "{Runtime.call}" do
+  it "{Runtime.call} matcher block" do
     default_matcher = {
       success:    ->(*) { raise },
       not_found:  ->(ctx, model:, **) { render "404, #{model} not found" },
@@ -67,8 +67,6 @@ class Protocol < Trailblazer::Endpoint::Protocol
       # assert_equal @rendered, %(404, false not found)
     end
 
-    #,mljnimh
-
     # endpoint "bla", ctx: {} do
     #   success do |ctx, model:, **|
     #     render model.inspect