diff --git a/src/game/engine/missile-engine.ts b/src/game/engine/missile-engine.ts
index 62bd95a..a228f30 100644
--- a/src/game/engine/missile-engine.ts
+++ b/src/game/engine/missile-engine.ts
@@ -1196,7 +1196,8 @@ export class MissileEngine {
         }
 
         // Slow Missiles: scale velocity by 1/3 (0.33) if missile is slowed or owner is affected by slowmissiles
-        const effectiveSpeedMult = m.slowMultiplier ?? (m.isSlowed || m.owner.stateBus.hasState('slowmissiles') ? 0.33 : 1.0)
+        const isOwnerSlowed = m.owner?.stateBus?.hasState?.('slowmissiles') ?? false
+        const effectiveSpeedMult = m.slowMultiplier ?? (m.isSlowed || isOwnerSlowed ? 0.33 : 1.0)
         m.x += m.vx * effectiveSpeedMult
         m.y += m.vy * effectiveSpeedMult