diff --git a/projects/openttd_vs90.vcproj b/projects/openttd_vs90.vcproj
--- a/projects/openttd_vs90.vcproj
+++ b/projects/openttd_vs90.vcproj
@@ -573,6 +573,14 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\highscore.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\highscore_gui.cpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\ini.cpp"
 				>
 			</File>
@@ -1069,6 +1077,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\highscore.h"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\industry.h"
 				>
 			</File>