diff --git a/include/wx/scopeguard.h b/include/wx/scopeguard.h
index baa33fb799..da056e08db 100644
--- a/include/wx/scopeguard.h
+++ b/include/wx/scopeguard.h
@@ -411,7 +411,7 @@ template <typename T, typename U>
 class VariableSetterImpl : public VariableSetterBase
 {
 public:
-    VariableSetterImpl(T& var, const U& value)
+    VariableSetterImpl(T& var, U value)
         : m_var(var),
           m_value(value)
     {
@@ -424,7 +424,7 @@ public:
 
 private:
     T& m_var;
-    const U& m_value;
+    const U m_value;
 
     // suppress the warning about assignment operator not being generated
     VariableSetterImpl<T, U>& operator=(const VariableSetterImpl<T, U>&);
@@ -454,7 +454,7 @@ private:
 
 template <typename T, typename U>
 inline
-wxPrivate::VariableSetterImpl<T, U> wxMakeVarSetter(T& var, const U& value)
+wxPrivate::VariableSetterImpl<T, U> wxMakeVarSetter(T& var, U value)
 {
       return wxPrivate::VariableSetterImpl<T, U>(var, value);
 }
diff --git a/interface/wx/scopeguard.h b/interface/wx/scopeguard.h
index 55ea677e22..01887eb603 100644
--- a/interface/wx/scopeguard.h
+++ b/interface/wx/scopeguard.h
@@ -131,6 +131,9 @@ wxScopeGuard wxMakeGuard(F func, P1 p1, ..., PN pN);
     }
     @endcode
 
+    Notice that @a value is copied, i.e. stored by value, so it can be a
+    temporary object returned by a function call, for example.
+
     @see wxON_BLOCK_EXIT_OBJ0(), wxON_BLOCK_EXIT_NULL()
 
     @header{wx/scopeguard.h}