diff --git a/include/gsl.h b/include/gsl.h
index 0477c02..6da10c4 100644
--- a/include/gsl.h
+++ b/include/gsl.h
@@ -73,6 +73,11 @@ using owner = T;
 // GSL.util: utilities
 //
 
+namespace detail
+{
+    void no_action() noexcept {}
+}
+
 // final_act allows you to ensure something gets run at the end of a scope
 template <class F>
 class final_act
@@ -80,7 +85,7 @@ class final_act
 public:
     explicit final_act(F f) noexcept : f_(std::move(f)) {}
 
-    final_act(final_act&& other) noexcept : f_(std::move(other.f_)) { other.f_ = NoAction; }
+    final_act(final_act&& other) noexcept : f_(std::move(other.f_)) { other.f_ = detail::no_action; }
     final_act(const final_act&) = delete;
     final_act& operator=(const final_act&) = delete;
 
@@ -88,8 +93,6 @@ public:
 
 private:
     F f_;
-
-    static void NoAction(){}
 };
 
 // finally() - convenience function to generate a final_act