diff --git a/src/openrct2/drawing/LightFX.cpp b/src/openrct2/drawing/LightFX.cpp
index 43b8771a4b..a61eee58fb 100644
--- a/src/openrct2/drawing/LightFX.cpp
+++ b/src/openrct2/drawing/LightFX.cpp
@@ -16,22 +16,19 @@
 #    include "../config/Config.h"
 #    include "../interface/Viewport.h"
 #    include "../interface/Window.h"
+#    include "../interface/Window_internal.h"
+#    include "../paint/Paint.h"
 #    include "../ride/Ride.h"
 #    include "../util/Util.h"
 #    include "../world/Climate.h"
 #    include "../world/Map.h"
 #    include "../world/Sprite.h"
 #    include "Drawing.h"
-#include "../paint/Paint.h"
-#include "../interface/Window_internal.h"
 
 #    include <algorithm>
 #    include <cmath>
 #    include <cstring>
 
-struct InteractionInfo;
-InteractionInfo set_interaction_info_from_paint_session(paint_session* session, uint16_t filter);
-
 static uint8_t _bakedLightTexture_lantern_0[32 * 32];
 static uint8_t _bakedLightTexture_lantern_1[64 * 64];
 static uint8_t _bakedLightTexture_lantern_2[128 * 128];
@@ -272,6 +269,7 @@ void lightfx_prepare_light_list()
         };
         // clang-format on
 
+        // Light occlusion code
         if (true)
         {
             int32_t totalSamplePoints = 5;
diff --git a/src/openrct2/interface/Viewport.h b/src/openrct2/interface/Viewport.h
index 161e9f7721..d51efc2b49 100644
--- a/src/openrct2/interface/Viewport.h
+++ b/src/openrct2/interface/Viewport.h
@@ -168,6 +168,7 @@ void get_map_coordinates_from_pos_window(
     rct_window* window, ScreenCoordsXY screenCoords, int32_t flags, CoordsXY& mapCoords, int32_t* interactionType,
     TileElement** tileElement, rct_viewport** viewport);
 
+InteractionInfo set_interaction_info_from_paint_session(paint_session* session, uint16_t filter);
 int32_t viewport_interaction_get_item_left(ScreenCoordsXY screenCoords, viewport_interaction_info* info);
 int32_t viewport_interaction_left_over(ScreenCoordsXY screenCoords);
 int32_t viewport_interaction_left_click(ScreenCoordsXY screenCoords);