diff --git a/OpenRA.Game/Traits/TraitsInterfaces.cs b/OpenRA.Game/Traits/TraitsInterfaces.cs
index 967caafb8f..1d9a2dccf8 100644
--- a/OpenRA.Game/Traits/TraitsInterfaces.cs
+++ b/OpenRA.Game/Traits/TraitsInterfaces.cs
@@ -307,6 +307,8 @@ namespace OpenRA.Traits
 	public interface INotifySelection { void SelectionChanged(); }
 
 	public interface IWorldLoaded { void WorldLoaded(World w, WorldRenderer wr); }
+
+	[RequireExplicitImplementation]
 	public interface ICreatePlayers { void CreatePlayers(World w); }
 
 	public interface IBotInfo : ITraitInfoInterface
diff --git a/OpenRA.Mods.Common/Traits/World/CreateMPPlayers.cs b/OpenRA.Mods.Common/Traits/World/CreateMPPlayers.cs
index 70d3ba1a74..b5fb0f635e 100644
--- a/OpenRA.Mods.Common/Traits/World/CreateMPPlayers.cs
+++ b/OpenRA.Mods.Common/Traits/World/CreateMPPlayers.cs
@@ -22,7 +22,7 @@ namespace OpenRA.Mods.Common.Traits
 
 	public class CreateMPPlayers : ICreatePlayers
 	{
-		public void CreatePlayers(World w)
+		void ICreatePlayers.CreatePlayers(World w)
 		{
 			var players = new MapPlayers(w.Map.PlayerDefinitions).Players;
 			var worldPlayers = new List<Player>();
diff --git a/OpenRA.Mods.Common/Traits/World/EditorActorLayer.cs b/OpenRA.Mods.Common/Traits/World/EditorActorLayer.cs
index 6a5f09171c..8dd13a942f 100644
--- a/OpenRA.Mods.Common/Traits/World/EditorActorLayer.cs
+++ b/OpenRA.Mods.Common/Traits/World/EditorActorLayer.cs
@@ -45,7 +45,7 @@ namespace OpenRA.Mods.Common.Traits
 			this.info = info;
 		}
 
-		public void CreatePlayers(World w)
+		void ICreatePlayers.CreatePlayers(World w)
 		{
 			if (w.Type != WorldType.Editor)
 				return;