diff --git a/metadata/com.hyperionics.fbreader.plugin.tts_plus.txt b/metadata/com.hyperionics.fbreader.plugin.tts_plus.txt
index b6c48ccb81..7cd82ab1be 100644
--- a/metadata/com.hyperionics.fbreader.plugin.tts_plus.txt
+++ b/metadata/com.hyperionics.fbreader.plugin.tts_plus.txt
@@ -1,3 +1,4 @@
+AntiFeatures:UpstreamNonFree
 Categories:Reading
 License:Apache2
 Web Site:http://www.hyperionics.com/?Page=/TtsPlus