diff --git a/common/main/multibot.h b/common/main/multibot.h
index af6d3a161..a4a5b06fb 100644
--- a/common/main/multibot.h
+++ b/common/main/multibot.h
@@ -46,7 +46,7 @@ void multi_send_robot_explode(objptridx_t objnum, objnum_t killer);
 void multi_send_create_robot(int robotcen, objnum_t objnum, int type);
 #ifdef dsx
 namespace dsx {
-void multi_send_boss_teleport(vobjptridx_t bossobjnum, segnum_t where);
+void multi_send_boss_teleport(vobjptridx_t bossobjnum, vcsegidx_t where);
 }
 #endif
 void multi_send_boss_cloak(objnum_t bossobjnum);
diff --git a/similar/main/multibot.cpp b/similar/main/multibot.cpp
index 6098154f8..fddf8ca46 100644
--- a/similar/main/multibot.cpp
+++ b/similar/main/multibot.cpp
@@ -624,7 +624,7 @@ static inline void multi_send_boss_action(objnum_t bossobjnum, Args&&... args)
 }
 
 namespace dsx {
-void multi_send_boss_teleport(const vobjptridx_t bossobj, segnum_t where)
+void multi_send_boss_teleport(const vobjptridx_t bossobj, const vcsegidx_t where)
 {
 	// Boss is up for grabs after teleporting
 	Assert((bossobj->ctype.ai_info.REMOTE_SLOT_NUM >= 0) && (bossobj->ctype.ai_info.REMOTE_SLOT_NUM < MAX_ROBOTS_CONTROLLED));