diff --git a/lib/convert-worker.js b/lib/convert-worker.js
index a271a5a..5b9602d 100644
--- a/lib/convert-worker.js
+++ b/lib/convert-worker.js
@@ -664,6 +664,7 @@ function fixHyphens(xml) {
   xml = xml.replace(/([Oo]ne) sided/g, "$1-sided");
   xml = xml.replace(/([Mm]edium) sized/g, "$1-sized");
   xml = xml.replace(/([Tt]eary) eyed/g, "$1-eyed");
+  xml = xml.replace(/([Ww]orst) case scenario/g, "$1-case scenario");
   xml = xml.replace(/([Ss]elf) (conscious|esteem|loathing|harm|destruct|preservation)/g, "$1-$2");
   xml = xml.replace(/([Oo]ne|[Tt]wo|[Tt]hree|[Ff]our|[Ff]ourth) dimensional/g, "$1-dimensional");
   xml = xml.replace(/(?<=\b)([Oo]ne) on one(?=\b)/g, "$1-on-one");