diff --git a/cpp-tutorial/stage1/main/hello-world.cc b/cpp-tutorial/stage1/main/hello-world.cc
index 04df0b226..efa6450d1 100644
--- a/cpp-tutorial/stage1/main/hello-world.cc
+++ b/cpp-tutorial/stage1/main/hello-world.cc
@@ -17,6 +17,9 @@ int main(int argc, char** argv) {
   if (argc > 1) {
     who = argv[1];
   }
+  
+  int x;
+  x;
   std::cout << get_greet(who) << std::endl;
   print_localtime();
   return 0;