diff --git a/include/boost/function/function_template.hpp b/include/boost/function/function_template.hpp
index 3514e28..bf139a0 100644
--- a/include/boost/function/function_template.hpp
+++ b/include/boost/function/function_template.hpp
@@ -858,7 +858,7 @@ namespace boost {
 #else
   private:
     struct dummy {
-      void nonnull() {};
+      void nonnull() {}
     };
 
     typedef void (dummy::*safe_bool)();