diff --git a/example/tutorial/CMakeLists.txt b/example/tutorial/CMakeLists.txt
index a8859a8..e72cce7 100644
--- a/example/tutorial/CMakeLists.txt
+++ b/example/tutorial/CMakeLists.txt
@@ -2,4 +2,5 @@ if (BUILD_MOCKTRACER AND BUILD_SHARED_LIBS)
   include_directories(../../mocktracer/include)
   add_executable(tutorial-example tutorial-example.cpp)
   target_link_libraries(tutorial-example opentracing_mocktracer)
+  add_test(tutorial-example tutorial-example)
 endif()
diff --git a/mocktracer/include/opentracing/mocktracer/tracer.h b/mocktracer/include/opentracing/mocktracer/tracer.h
index e8ca8c4..27a2c7c 100644
--- a/mocktracer/include/opentracing/mocktracer/tracer.h
+++ b/mocktracer/include/opentracing/mocktracer/tracer.h
@@ -13,7 +13,7 @@ namespace mocktracer {
 
 struct PropagationOptions {
   // Specifies what key to use when injecting and extracting span context.
-  std::string propagation_key = "x-ot_span_context";
+  std::string propagation_key = "x-ot-span-context";
 
   // If inject_error_code is non-zero, MockTracer::Inject fails with
   // inject_error_code.