diff --git a/src/p_enemy.c b/src/p_enemy.c
index 3b598fb8b..d43942d88 100644
--- a/src/p_enemy.c
+++ b/src/p_enemy.c
@@ -86,6 +86,9 @@ void A_Scream(mobj_t *actor);
 void A_Pain(mobj_t *actor);
 void A_1upThinker(mobj_t *actor);
 void A_MonitorPop(mobj_t *actor);
+void A_GoldMonitorPop(mobj_t *actor);
+void A_GoldMonitorRestore(mobj_t *actor);
+void A_GoldMonitorSparkle(mobj_t *actor);
 void A_Explode(mobj_t *actor);
 void A_BossDeath(mobj_t *actor);
 void A_CustomPower(mobj_t *actor);