diff --git a/griffin/griffin.c b/griffin/griffin.c
index ab1994598d..3a85e74583 100644
--- a/griffin/griffin.c
+++ b/griffin/griffin.c
@@ -673,6 +673,10 @@ UI
 #include "../ui/drivers/ui_qt.c"
 #endif
 
+#ifdef _WIN32
+#include "../ui/drivers/ui_win32.c"
+#endif
+
 /*============================================================
 MAIN
 ============================================================ */
diff --git a/ui/ui_companion_driver.c b/ui/ui_companion_driver.c
index f9de77f610..06c36254f2 100644
--- a/ui/ui_companion_driver.c
+++ b/ui/ui_companion_driver.c
@@ -26,7 +26,7 @@
 static bool main_ui_companion_is_on_foreground;
 
 static const ui_companion_driver_t *ui_companion_drivers[] = {
-#ifdef _WIN32
+#if defined(_WIN32)
    &ui_companion_win32,
 #endif
 #ifdef HAVE_COCOA