diff --git a/SVSim.BattleEngine.Tests/BattleAmbientTests.cs b/SVSim.BattleEngine.Tests/BattleAmbientTests.cs
index e4a6ca2..00952b4 100644
--- a/SVSim.BattleEngine.Tests/BattleAmbientTests.cs
+++ b/SVSim.BattleEngine.Tests/BattleAmbientTests.cs
@@ -189,4 +189,15 @@ public class BattleAmbientTests
         using var _ = BattleAmbient.Enter(ctx);
         Assert.That(Wizard.Data.BattleRecoveryInfo, Is.SameAs(info));
     }
+
+    [Test]
+    public void BattleRecoveryInfo_SetInsideScope_WritesAmbient()
+    {
+        var ctx = new BattleAmbientContext();
+        using var _ = BattleAmbient.Enter(ctx);
+        var info = (Wizard.BattleRecoveryInfo)System.Runtime.Serialization
+            .FormatterServices.GetUninitializedObject(typeof(Wizard.BattleRecoveryInfo));
+        Wizard.Data.BattleRecoveryInfo = info;
+        Assert.That(ctx.RecoveryInfo, Is.SameAs(info));
+    }
 }