diff --git a/test/unit/CounterDrone.Core.Tests/AlgorithmFactoryTests.cs b/test/unit/CounterDrone.Core.Tests/AlgorithmFactoryTests.cs
index 5bae74d..742e4d1 100644
--- a/test/unit/CounterDrone.Core.Tests/AlgorithmFactoryTests.cs
+++ b/test/unit/CounterDrone.Core.Tests/AlgorithmFactoryTests.cs
@@ -36,6 +36,7 @@ namespace CounterDrone.Core.Tests
         public float EffectiveRadius => 100f;
         public ParticleParams Particles => new();
         public bool IsDissipated => false;
+        public int Phase => 2;
 
         public void Initialize(CounterDrone.Core.Models.AmmunitionSpec ammo,
             CounterDrone.Core.Models.CombatScene env, Vector3 releasePos, float releaseTime)