diff --git a/scoped_ptr.htm b/scoped_ptr.htm
index 881c402..f3a0155 100644
--- a/scoped_ptr.htm
+++ b/scoped_ptr.htm
@@ -115,7 +115,7 @@ class MyClass {
     int add_one() { return ++*ptr; }
 };
 
-void main()
+int main()
 {
     boost::scoped_ptr<Shoe> x(new Shoe);
     MyClass my_instance;