diff --git a/projects/openttd_vs80.vcproj b/projects/openttd_vs80.vcproj
--- a/projects/openttd_vs80.vcproj
+++ b/projects/openttd_vs80.vcproj
@@ -736,7 +736,11 @@
 				>
 			</File>
 			<File
-				RelativePath=".\..\src\thread.cpp"
+				RelativePath=".\..\src\thread_win32.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\..\src\fiber_win32.cpp"
 				>
 			</File>
 			<File
@@ -792,6 +796,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\core\alloc_type.hpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\articulated_vehicles.h"
 				>
 			</File>
@@ -944,6 +952,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\fiber.hpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\fileio.h"
 				>
 			</File>
@@ -2232,6 +2244,10 @@
 				>
 			</File>
 			<File
+				RelativePath=".\..\src\misc\countedobj.cpp"
+				>
+			</File>
+			<File
 				RelativePath=".\..\src\misc\countedptr.hpp"
 				>
 			</File>