diff --git a/openttd.vcproj b/openttd.vcproj
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -696,6 +696,9 @@
 				RelativePath=".\depot_gui.c">
 			</File>
 			<File
+				RelativePath=".\build_vehicle_gui.c">
+			</File>
+			<File
 				RelativePath=".\dock_gui.c">
 			</File>
 			<File