diff --git a/gdk/gdkconfig.h.win32 b/gdk/gdkconfig.h.win32
index c941eb86a0..13022e88ec 100644
--- a/gdk/gdkconfig.h.win32
+++ b/gdk/gdkconfig.h.win32
@@ -14,6 +14,19 @@
 
 G_BEGIN_DECLS
 
+/* These macros are used to mark deprecated functions in GDK and
+ * GTK+ headers, and thus have to be exposed in installed headers.
+ * But please do *not* use them in other projects. Instead, use
+ * G_DEPRECATED or define your own wrappers around it.
+ */
+
+#ifdef GDK_DISABLE_DEPRECATION_WARNINGS
+#define GDK_DEPRECATED
+#define GDK_DEPRECATED_FOR(f)
+#else
+#define GDK_DEPRECATED G_DEPRECATED
+#define GDK_DEPRECATED_FOR(f) G_DEPRECATED_FOR(f)
+#endif
 
 #define GDK_WINDOWING_WIN32