diff --git a/test/iterator_facade.cpp b/test/iterator_facade.cpp
index 305dfe5..4436a27 100755
--- a/test/iterator_facade.cpp
+++ b/test/iterator_facade.cpp
@@ -56,8 +56,11 @@ struct proxy
         
     int& state;
 };
-    
-struct value { int x; };
+
+struct value
+{
+    void mutator() {} // non-const member function
+};
 
 struct input_iter
   : boost::iterator_facade<
@@ -97,8 +100,8 @@ int main()
     // test for a fix to http://tinyurl.com/zuohe
     // These two lines should be equivalent (and both compile)
     input_iter p;
-    (*p).x = 2;
-    p->x = 2;
+    (*p).mutator();
+    p->mutator();
     
     return 0;
 }