diff --git a/OpenRA.Mods.Common/TraitsInterfaces.cs b/OpenRA.Mods.Common/TraitsInterfaces.cs
index d5f350a7ce..1cfc3f27fb 100644
--- a/OpenRA.Mods.Common/TraitsInterfaces.cs
+++ b/OpenRA.Mods.Common/TraitsInterfaces.cs
@@ -314,7 +314,7 @@ namespace OpenRA.Mods.Common.Traits
 	}
 
 	[RequireExplicitImplementation]
-	interface IWallConnector
+	public interface IWallConnector
 	{
 		bool AdjacentWallCanConnect(Actor self, CPos wallLocation, string wallType, out CVec facing);
 		void SetDirty();