diff --git a/metadata/pl.librus.client.txt b/metadata/pl.librus.client.txt
index 56c1e57f28..f5d98f55b4 100644
--- a/metadata/pl.librus.client.txt
+++ b/metadata/pl.librus.client.txt
@@ -1,3 +1,4 @@
+AntiFeatures:NonFreeNet
 Categories:Science & Education
 License:GPL-3.0
 Web Site: