diff --git a/include/wx/window.h b/include/wx/window.h
index 38d70ab7a8..8046223a4a 100644
--- a/include/wx/window.h
+++ b/include/wx/window.h
@@ -48,22 +48,6 @@
     #define wxUSE_MENUS_NATIVE wxUSE_MENUS
 #endif // __WXUNIVERSAL__/!__WXUNIVERSAL__
 
-
-// Define this macro if the corresponding operating system handles the state
-// of children windows automatically when the parent is enabled/disabled.
-// Otherwise wx itself must ensure that when the parent is disabled its
-// children are disabled too, and their initial state is restored when the
-// parent is enabled back.
-#if defined(__WXMSW__)
-    // must do everything ourselves
-    #undef wxHAS_NATIVE_ENABLED_MANAGEMENT
-#elif defined(__WXOSX__)
-    // must do everything ourselves
-    #undef wxHAS_NATIVE_ENABLED_MANAGEMENT
-#else
-    #define wxHAS_NATIVE_ENABLED_MANAGEMENT
-#endif
-
 // ----------------------------------------------------------------------------
 // forward declarations
 // ----------------------------------------------------------------------------
diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index f07acd465d..d398f1f7b0 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -1166,6 +1166,21 @@ bool wxWindowBase::IsEnabled() const
     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 }
 
+// Define this macro if the corresponding operating system handles the state
+// of children windows automatically when the parent is enabled/disabled.
+// Otherwise wx itself must ensure that when the parent is disabled its
+// children are disabled too, and their initial state is restored when the
+// parent is enabled back.
+#if defined(__WXMSW__)
+    // must do everything ourselves
+    #undef wxHAS_NATIVE_ENABLED_MANAGEMENT
+#elif defined(__WXOSX__)
+    // must do everything ourselves
+    #undef wxHAS_NATIVE_ENABLED_MANAGEMENT
+#else
+    #define wxHAS_NATIVE_ENABLED_MANAGEMENT
+#endif
+
 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 {
     // Under some platforms there is no need to update the window state