diff --git a/gio/giomodule.c b/gio/giomodule.c
index e697efead..3a131e129 100644
--- a/gio/giomodule.c
+++ b/gio/giomodule.c
@@ -1125,7 +1125,7 @@ _g_io_modules_ensure_loaded (void)
       g_type_ensure (g_network_monitor_portal_get_type ());
       g_type_ensure (g_proxy_resolver_portal_get_type ());
 #endif
-#ifdef HAVE_MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
+#if HAVE_MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
       g_type_ensure (g_cocoa_notification_backend_get_type ());
 #endif
 #ifdef G_OS_WIN32