diff --git a/zdoom.vcproj b/zdoom.vcproj
index ef356b44a..d171b18eb 100644
--- a/zdoom.vcproj
+++ b/zdoom.vcproj
@@ -890,6 +890,10 @@
 				RelativePath=".\src\p_switch.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\src\p_tags.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\src\p_teleport.cpp"
 				>
@@ -1451,6 +1455,10 @@
 				RelativePath=".\src\p_spec.h"
 				>
 			</File>
+			<File
+				RelativePath=".\src\p_tags.h"
+				>
+			</File>
 			<File
 				RelativePath=".\src\p_terrain.h"
 				>