diff --git a/source/dub/dependencyresolver.d b/source/dub/dependencyresolver.d
index 1f3d168..6a292ef 100644
--- a/source/dub/dependencyresolver.d
+++ b/source/dub/dependencyresolver.d
@@ -257,7 +257,7 @@
 		void markRecursively(TreeNode node)
 		{
 			if (node.pack in required) return;
-			required[node.pack] = true;
+			required[basePackage(node.pack)] = true;
 			foreach (dep; getChildren(node).filter!(dep => dep.depType != DependencyType.optional))
 				if (auto dp = basePackage(dep.pack) in configs)
 					markRecursively(TreeNode(dep.pack, *dp));