diff --git a/src/gaemstone/ECS/Universe+Modules.cs b/src/gaemstone/ECS/Universe+Modules.cs
index d8b48e4..38b81a1 100644
--- a/src/gaemstone/ECS/Universe+Modules.cs
+++ b/src/gaemstone/ECS/Universe+Modules.cs
@@ -157,6 +157,10 @@ internal class ModuleInfo
 		}
 
 		Entity = module.Build().CreateLookup(Type);
+
+		// Ensure that all the parent entities have Module set, too.
+		for (var p = Entity.Parent; p != null; p = p.Parent)
+			p.Add<Module>();
 	}
 
 	public void Enable()