diff --git a/projects/openttd_vs80.vcproj b/projects/openttd_vs80.vcproj
--- a/projects/openttd_vs80.vcproj
+++ b/projects/openttd_vs80.vcproj
@@ -952,6 +952,10 @@
 				>
 			</File>
 			<File
+				RelativePath="..\src\newgrf_industries.h"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\newgrf_sound.h"
 				>
 			</File>
@@ -1528,6 +1532,10 @@
 				>
 			</File>
 			<File
+				RelativePath="..\src\newgrf_industries.cpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\newgrf_sound.cpp"
 				>
 			</File>