diff --git a/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedAnimation.cs b/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedAnimation.cs
index 079ceceede..1440f12236 100644
--- a/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedAnimation.cs
+++ b/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedAnimation.cs
@@ -35,26 +35,26 @@ namespace OpenRA.Mods.Common.Traits.Render
 			buildComplete = !self.Info.HasTraitInfo<BuildingInfo>();
 		}
 
-		public void BuildingComplete(Actor self)
+		void INotifyBuildComplete.BuildingComplete(Actor self)
 		{
 			buildComplete = true;
 		}
 
-		public void Sold(Actor self) { }
-		public void Selling(Actor self)
+		void INotifySold.Sold(Actor self) { }
+		void INotifySold.Selling(Actor self)
 		{
 			buildComplete = false;
 		}
 
-		public void BeforeTransform(Actor self)
+		void INotifyTransform.BeforeTransform(Actor self)
 		{
 			buildComplete = false;
 		}
 
-		public void OnTransform(Actor self) { }
-		public void AfterTransform(Actor self) { }
+		void INotifyTransform.OnTransform(Actor self) { }
+		void INotifyTransform.AfterTransform(Actor self) { }
 
-		public void BuildingPlaced(Actor self)
+		void INotifyBuildingPlaced.BuildingPlaced(Actor self)
 		{
 			if (buildComplete)
 				wsb.PlayCustomAnimation(self, info.Sequence, () => wsb.CancelCustomAnimation(self));
diff --git a/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedOverlay.cs b/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedOverlay.cs
index a2c45a6735..63119f436f 100644
--- a/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedOverlay.cs
+++ b/OpenRA.Mods.Common/Traits/Render/WithBuildingPlacedOverlay.cs
@@ -55,32 +55,32 @@ namespace OpenRA.Mods.Common.Traits.Render
 			rs.Add(anim, info.Palette, info.IsPlayerPalette);
 		}
 
-		public void BuildingComplete(Actor self)
+		void INotifyBuildComplete.BuildingComplete(Actor self)
 		{
 			buildComplete = true;
 			visible = false;
 		}
 
-		public void Sold(Actor self) { }
-		public void Selling(Actor self)
+		void INotifySold.Sold(Actor self) { }
+		void INotifySold.Selling(Actor self)
 		{
 			buildComplete = false;
 		}
 
-		public void BeforeTransform(Actor self)
+		void INotifyTransform.BeforeTransform(Actor self)
 		{
 			buildComplete = false;
 		}
 
-		public void OnTransform(Actor self) { }
-		public void AfterTransform(Actor self) { }
+		void INotifyTransform.OnTransform(Actor self) { }
+		void INotifyTransform.AfterTransform(Actor self) { }
 
-		public void DamageStateChanged(Actor self, AttackInfo e)
+		void INotifyDamageStateChanged.DamageStateChanged(Actor self, AttackInfo e)
 		{
 			overlay.ReplaceAnim(RenderSprites.NormalizeSequence(overlay, e.DamageState, overlay.CurrentSequence.Name));
 		}
 
-		public void BuildingPlaced(Actor self)
+		void INotifyBuildingPlaced.BuildingPlaced(Actor self)
 		{
 			visible = true;
 			overlay.PlayThen(overlay.CurrentSequence.Name, () => visible = false);