diff --git a/openttd.vcproj b/openttd.vcproj
index 00283267d7..a6996c8a7c 100644
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -526,6 +526,9 @@
 			<File
 				RelativePath=".\network_gamelist.h">
 			</File>
+			<File
+				RelativePath=".\network_gui.h">
+			</File>
 			<File
 				RelativePath=".\network_server.h">
 			</File>
diff --git a/openttd_vs80.vcproj b/openttd_vs80.vcproj
index 48d48f4afc..4b52db6375 100644
--- a/openttd_vs80.vcproj
+++ b/openttd_vs80.vcproj
@@ -995,6 +995,10 @@
 				RelativePath=".\network_gamelist.h"
 				>
 			</File>
+			<File
+				RelativePath=".\network_gui.h"
+				>
+			</File>
 			<File
 				RelativePath=".\network_server.h"
 				>