diff --git a/850.split-ambiguities/m.yaml b/850.split-ambiguities/m.yaml
index 3bbf6f8ef..e91084eb5 100644
--- a/850.split-ambiguities/m.yaml
+++ b/850.split-ambiguities/m.yaml
@@ -294,6 +294,13 @@
 - { name: monocle, wwwpart: packetstormsecurity, setname: monocle-host-discovery }
 - { name: monocle, addflag: unclassified }
 
+- { name: mp3cat, wwwpart: dmulholl, setname: mp3cat-dmulholl }
+- { name: mp3cat, wwwpart: tomclegg, setname: mp3cat-tomclegg }
+- { name: mp3cat, addflag: unclassified }
+
+- { name: mp3cat-go, wwwpart: dmulholl, setname: mp3cat-dmulholl }
+- { name: mp3cat-go, addflag: unclassified }
+
 - { name: mp3check, wwwpart: icculus, setname: mp3check-icculus }
 
 - { name: mp4ff, wwwpart: Eyevinn, setname: "go:mp4ff" }