diff --git a/openttd.vcproj b/openttd.vcproj
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -277,6 +277,9 @@
 				RelativePath=".\newgrf.c">
 			</File>
 			<File
+				RelativePath=".\newgrf_cargo.c">
+			</File>
+			<File
 				RelativePath=".\newgrf_engine.c">
 			</File>
 			<File
@@ -503,6 +506,9 @@
 				RelativePath=".\newgrf_callbacks.h">
 			</File>
 			<File
+				RelativePath=".\newgrf_cargo.h">
+			</File>
+			<File
 				RelativePath=".\newgrf_engine.h">
 			</File>
 			<File