diff --git a/OpenRA.Mods.Common/Traits/ChangesHealth.cs b/OpenRA.Mods.Common/Traits/ChangesHealth.cs
index fedd6ae311..893e21bbaa 100644
--- a/OpenRA.Mods.Common/Traits/ChangesHealth.cs
+++ b/OpenRA.Mods.Common/Traits/ChangesHealth.cs
@@ -41,7 +41,7 @@ namespace OpenRA.Mods.Common.Traits
 		public override object Create(ActorInitializer init) { return new ChangesHealth(init.Self, this); }
 	}
 
-	class ChangesHealth : ConditionalTrait<ChangesHealthInfo>, ITick, INotifyDamage
+	class ChangesHealth : ConditionalTrait<ChangesHealthInfo>, ITick, INotifyDamage, ISync
 	{
 		readonly IHealth health;