diff --git a/src/openrct2/paint/Painter.h b/src/openrct2/paint/Painter.h
index 2e73c9de69..56182dfd78 100644
--- a/src/openrct2/paint/Painter.h
+++ b/src/openrct2/paint/Painter.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <ctime>
+#include <memory>
 #include "../common.h"
 
 struct rct_drawpixelinfo;
diff --git a/src/openrct2/ride/ShopItem.h b/src/openrct2/ride/ShopItem.h
index 2ce8354fcd..43251c2f76 100644
--- a/src/openrct2/ride/ShopItem.h
+++ b/src/openrct2/ride/ShopItem.h
@@ -18,6 +18,8 @@
 
 #include "../common.h"
 
+struct Ride;
+
 enum
 {
     SHOP_ITEM_BALLOON,