diff --git a/libs/openzap/openzap.vcproj b/libs/openzap/openzap.vcproj
index e37c43672c..80eed02239 100644
--- a/libs/openzap/openzap.vcproj
+++ b/libs/openzap/openzap.vcproj
@@ -286,6 +286,10 @@
 				RelativePath=".\src\include\openzap.h"
 				>
 			</File>
+			<File
+				RelativePath=".\src\include\sangoma_tdm_api.h"
+				>
+			</File>
 			<File
 				RelativePath=".\src\include\zap_buffer.h"
 				>
@@ -302,6 +306,10 @@
 				RelativePath=".\src\include\zap_threadmutex.h"
 				>
 			</File>
+			<File
+				RelativePath=".\src\include\zap_types.h"
+				>
+			</File>
 			<File
 				RelativePath=".\src\include\zap_wanpipe.h"
 				>