diff --git a/projects/openttd_vs80.vcproj b/projects/openttd_vs80.vcproj
--- a/projects/openttd_vs80.vcproj
+++ b/projects/openttd_vs80.vcproj
@@ -3107,6 +3107,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\script\api\script_game.hpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\script\api\script_gamesettings.hpp"
 				>
 			</File>
@@ -3323,6 +3327,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\script\api\script_game.cpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\script\api\script_gamesettings.cpp"
 				>
 			</File>