diff --git a/src/Library.vcproj b/src/Library.vcproj
index c830ac1..073df63 100644
--- a/src/Library.vcproj
+++ b/src/Library.vcproj
@@ -159,6 +159,18 @@
 				RelativePath="..\include\loki\AssocVector.h"
 				>
 			</File>
+			<File
+				RelativePath="..\include\loki\CachedFactory.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\loki\Checker.h"
+				>
+			</File>
+			<File
+				RelativePath="..\include\loki\CheckReturn.h"
+				>
+			</File>
 			<File
 				RelativePath="..\include\loki\ConstPolicy.h"
 				>