diff --git a/source/dub/package_.d b/source/dub/package_.d
index 34315e9..27ebff9 100644
--- a/source/dub/package_.d
+++ b/source/dub/package_.d
@@ -290,7 +290,7 @@
 	const {
 		if (depname in m_info.buildSettings.dependencies) return true;
 		foreach (ref c; m_info.configurations)
-			if (c.name == config && depname in c.buildSettings.dependencies)
+			if ((config.empty || c.name == config) && depname in c.buildSettings.dependencies)
 				return true;
 		return false;
 	}