diff --git a/source/games/duke/src/cheats.cpp b/source/games/duke/src/cheats.cpp
index 16c7c3e13..81eab90bf 100644
--- a/source/games/duke/src/cheats.cpp
+++ b/source/games/duke/src/cheats.cpp
@@ -41,6 +41,7 @@ source as it is released.
 #include "c_dispatch.h"
 #include "gamestate.h"
 #include "automap.h"
+#include "dukeactor.h"
 
 EXTERN_CVAR(Int, developer)
 EXTERN_CVAR(Bool, sv_cheats)
diff --git a/source/games/duke/src/d_menu.cpp b/source/games/duke/src/d_menu.cpp
index bf78ea70a..96aa69fcb 100644
--- a/source/games/duke/src/d_menu.cpp
+++ b/source/games/duke/src/d_menu.cpp
@@ -41,6 +41,7 @@ Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
 #include "names.h"
 #include "mapinfo.h"
 #include "gamestate.h"
+#include "dukeactor.h"
 #include "../../glbackend/glbackend.h"