diff --git a/sim/encounters/ulduar/algalon25_ai.go b/sim/encounters/ulduar/algalon25_ai.go
index 0b093995f5..8a4185b42b 100644
--- a/sim/encounters/ulduar/algalon25_ai.go
+++ b/sim/encounters/ulduar/algalon25_ai.go
@@ -191,15 +191,15 @@ func (ai *Algalon25AI) registerCosmicSmashSpell(target *core.Target) {
 }
 
 func (ai *Algalon25AI) DoAction(sim *core.Simulation) {
-	if ai.BlackHoleExplosion.IsReady(sim) && sim.CurrentTime >= ai.BlackHoleExplosion.CD.Duration {
-		ai.BlackHoleExplosion.Cast(sim, nil)
-	}
+	if ai.Target.CurrentTarget != nil {
+		if ai.BlackHoleExplosion.IsReady(sim) && sim.CurrentTime >= ai.BlackHoleExplosion.CD.Duration {
+			ai.BlackHoleExplosion.Cast(sim, ai.Target.CurrentTarget)
+		}
 
-	if ai.CosmicSmash.IsReady(sim) && sim.CurrentTime >= ai.CosmicSmash.CD.Duration {
-		ai.CosmicSmash.Cast(sim, nil)
-	}
+		if ai.CosmicSmash.IsReady(sim) && sim.CurrentTime >= ai.CosmicSmash.CD.Duration {
+			ai.CosmicSmash.Cast(sim, ai.Target.CurrentTarget)
+		}
 
-	if ai.Target.CurrentTarget != nil {
 		if ai.PhasePunch.IsReady(sim) && sim.CurrentTime >= ai.PhasePunch.CD.Duration {
 			ai.PhasePunch.Cast(sim, ai.Target.CurrentTarget)
 			return
diff --git a/sim/encounters/ulduar/hodir_ai.go b/sim/encounters/ulduar/hodir_ai.go
index 82ac05115e..64f20edec3 100644
--- a/sim/encounters/ulduar/hodir_ai.go
+++ b/sim/encounters/ulduar/hodir_ai.go
@@ -504,12 +504,14 @@ func (ai *HodirAI) DoAction(sim *core.Simulation) {
 		}
 	}
 
-	if ai.FrozenBlows.IsReady(sim) && sim.CurrentTime >= ai.FrozenBlows.CD.Duration {
-		ai.FrozenBlows.Cast(sim, nil)
-	}
+	if ai.Target.CurrentTarget != nil {
+		if ai.FrozenBlows.IsReady(sim) && sim.CurrentTime >= ai.FrozenBlows.CD.Duration {
+			ai.FrozenBlows.Cast(sim, nil)
+		}
 
-	if ai.FlashFreeze.IsReady(sim) && sim.CurrentTime >= ai.FlashFreeze.CD.Duration {
-		ai.FlashFreeze.Cast(sim, nil)
+		if ai.FlashFreeze.IsReady(sim) && sim.CurrentTime >= ai.FlashFreeze.CD.Duration {
+			ai.FlashFreeze.Cast(sim, nil)
+		}
 	}
 
 	if ai.Target.GCD.IsReady(sim) {