diff --git a/src/trackers/RF.py b/src/trackers/RF.py
index a8de6d00d..87eac27cf 100644
--- a/src/trackers/RF.py
+++ b/src/trackers/RF.py
@@ -106,8 +106,11 @@ async def upload(self, meta, disctype):
 
     async def edit_name(self, meta):
         rf_name = meta['name']
-        if meta['tag'] == "":
+        tag_lower = meta['tag'].lower()
+        invalid_tags = ["nogrp", "nogroup", "unknown", "-unk-"]
+        if meta['tag'] == "" or any(invalid_tag in tag_lower for invalid_tag in invalid_tags):
             rf_name = f"{rf_name}-NoGroup"
+
         return rf_name
 
     async def get_cat_id(self, category_name):