diff --git a/openttd.vcproj b/openttd.vcproj
index 094f52d2de..c624e6bc53 100644
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -758,6 +758,9 @@
 			<File
 				RelativePath=".\network_gui.c">
 			</File>
+			<File
+				RelativePath=".\newgrf_gui.c">
+			</File>
 			<File
 				RelativePath=".\news_gui.c">
 			</File>
diff --git a/openttd_vs80.vcproj b/openttd_vs80.vcproj
index 5370011fa7..20757a8d59 100644
--- a/openttd_vs80.vcproj
+++ b/openttd_vs80.vcproj
@@ -1311,6 +1311,10 @@
 				RelativePath=".\network_gui.c"
 				>
 			</File>
+			<File
+				RelativePath=".\newgrf_gui.c"
+				>
+			</File>
 			<File
 				RelativePath=".\news_gui.c"
 				>