diff --git a/include/d/actor/d_a_hys.h b/include/d/actor/d_a_hys.h
index 5b2097c93..3ccb87f6b 100644
--- a/include/d/actor/d_a_hys.h
+++ b/include/d/actor/d_a_hys.h
@@ -2,6 +2,7 @@
 #define D_A_HYS_H
 
 #include "d/d_bg_s_movebg_actor.h"
+#include "m_Do/m_Do_ext.h"
 
 class daHys_c : public dBgS_MoveBgActor {
 public:
diff --git a/include/d/actor/d_a_obj_eskban.h b/include/d/actor/d_a_obj_eskban.h
index 2edebc5ec..fb2a75765 100644
--- a/include/d/actor/d_a_obj_eskban.h
+++ b/include/d/actor/d_a_obj_eskban.h
@@ -3,6 +3,8 @@
 
 #include "d/d_bg_s_movebg_actor.h"
 
+class dPa_smokeEcallBack;
+
 namespace daObjEskban {
 
     static const int DESTROY_VIBRATION_LEN = 35;
diff --git a/include/d/actor/d_a_obj_swhammer.h b/include/d/actor/d_a_obj_swhammer.h
index 362e47399..de1b559fa 100644
--- a/include/d/actor/d_a_obj_swhammer.h
+++ b/include/d/actor/d_a_obj_swhammer.h
@@ -2,6 +2,7 @@
 #define D_A_OBJ_SWHAMMER_H
 
 #include "d/d_bg_s_movebg_actor.h"
+#include "d/d_particle.h"
 
 class J3DNode;
 
diff --git a/include/d/actor/d_a_stone2.h b/include/d/actor/d_a_stone2.h
index 2d2c9b93c..37200a849 100644
--- a/include/d/actor/d_a_stone2.h
+++ b/include/d/actor/d_a_stone2.h
@@ -5,6 +5,7 @@
 #include "d/d_cc_d.h"
 #include "d/d_bg_s_acch.h"
 #include "d/d_a_obj.h"
+#include "d/d_particle.h"
 
 namespace daStone2 {
     struct Attr_c {