diff --git a/share/apps.json b/share/apps.json
index 795697382..1b612af1b 100644
--- a/share/apps.json
+++ b/share/apps.json
@@ -3175,7 +3175,7 @@
 			"website": "reactive-extensions.github.io/RxJS/",
 			"cats": [ 12 ],
 			"script": "rx(?:\\.\\w+)?(?:\\.compat)?(?:\\.min)?\\.js",
-			"env": "^Rx$"
+			"env": "^Rx$\\;confidence:20"
 		},
 		"S.Builder": {
 			"website": "www.sbuilder.ru",