diff --git a/demo-cxx/demo.cc b/demo-cxx/demo.cc
index 3900572..79340eb 100644
--- a/demo-cxx/demo.cc
+++ b/demo-cxx/demo.cc
@@ -9,7 +9,7 @@
 
 ThingC::~ThingC() { std::cout << "done with ThingC" << std::endl; }
 
-std::unique_ptr<ThingC> make_demo(cxxbridge::Str appname) {
+std::unique_ptr<ThingC> make_demo(::rust::Str appname) {
   return std::unique_ptr<ThingC>(new ThingC(appname));
 }