diff --git a/src/data/mime_db/application/x-vnd.haiku-icon b/src/data/mime_db/application/x-vnd.haiku-icon
index 63b0a933c7..7eaa091b2f 100644
--- a/src/data/mime_db/application/x-vnd.haiku-icon
+++ b/src/data/mime_db/application/x-vnd.haiku-icon
@@ -3,7 +3,7 @@ resource(0, "BEOS:TYPE") #'MIMS' "application/x-vnd.Be-meta-mime";
 
 resource(1, "META:TYPE") "application/x-vnd.Haiku-icon";
 
-resource(2, "META:SNIFF_RULE") "0.50          (\"IMSGHMF1\")";
+resource(2, "META:SNIFF_RULE") "0.50 0.50 (\"IMSGHMF1\" | \"IMSG1BOF\")";
 
 resource(3, "META:PREF_APP") #'MSIG' "application/x-vnd.haiku-icon_o_matic";