diff --git a/ttd.vcproj b/ttd.vcproj
index 9cf9f79835..69abe2e450 100644
--- a/ttd.vcproj
+++ b/ttd.vcproj
@@ -260,6 +260,9 @@
 			<File
 				RelativePath=".\airport.c">
 			</File>
+			<File
+				RelativePath=".\aystar.c">
+			</File>
 			<File
 				RelativePath="command.c">
 				<FileConfiguration
@@ -643,6 +646,9 @@
 						BasicRuntimeChecks="3"/>
 				</FileConfiguration>
 			</File>
+			<File
+				RelativePath=".\queue.c">
+			</File>
 			<File
 				RelativePath="saveload.c">
 				<FileConfiguration
@@ -1086,6 +1092,9 @@
 			<File
 				RelativePath=".\airport_movement.h">
 			</File>
+			<File
+				RelativePath=".\aystar.h">
+			</File>
 			<File
 				RelativePath="command.h">
 			</File>
@@ -1125,6 +1134,9 @@
 			<File
 				RelativePath="player.h">
 			</File>
+			<File
+				RelativePath=".\queue.h">
+			</File>
 			<File
 				RelativePath="saveload.h">
 			</File>
@@ -2594,6 +2606,25 @@
 				RelativePath="table\water_land.h">
 			</File>
 		</Filter>
+		<Filter
+			Name="AI Files"
+			Filter="">
+			<File
+				RelativePath=".\ai.h">
+			</File>
+			<File
+				RelativePath=".\ai_build.c">
+			</File>
+			<File
+				RelativePath=".\ai_new.c">
+			</File>
+			<File
+				RelativePath=".\ai_pathfinder.c">
+			</File>
+			<File
+				RelativePath=".\ai_shared.c">
+			</File>
+		</Filter>
 		<File
 			RelativePath="icon1.ico">
 		</File>