diff --git a/platform/win32/vcproj/contiki.exe.vcproj b/platform/win32/vcproj/contiki.exe.vcproj
index 3559a1f26..876cc1bfb 100644
--- a/platform/win32/vcproj/contiki.exe.vcproj
+++ b/platform/win32/vcproj/contiki.exe.vcproj
@@ -428,6 +428,10 @@
 					RelativePath="..\..\..\core\sys\pt.h"
 					>
 				</File>
+				<File
+					RelativePath="..\..\..\core\sys\rtimer.h"
+					>
+				</File>
 				<File
 					RelativePath="..\..\..\core\sys\service.c"
 					>
@@ -449,6 +453,10 @@
 		<Filter
 			Name="cpu"
 			>
+			<File
+				RelativePath="..\..\..\cpu\native\rtimer-arch.h"
+				>
+			</File>
 			<Filter
 				Name="net"
 				>