diff --git a/lib/convert-worker.js b/lib/convert-worker.js
index 72a73c2..dd91449 100644
--- a/lib/convert-worker.js
+++ b/lib/convert-worker.js
@@ -403,14 +403,16 @@ function enDashJointNames(xml) {
 }
 
 function fixPossessives(xml) {
-  // Fix possessive of names ending in "s"
-  // Note: if the "s" is unvoiced, as in Marquis, then it doesn't get the second "s".
+  // Fix possessive of names ending in "s".
   xml = xml.replace(
     // eslint-disable-next-line max-len
     /(?<!‘)(Judas|Brutus|Jess|Aegis|Dauntless|Circus|Sirius|Brooks|Genesis|Atlas|Lucas|Gwerrus|Chris|Eligos|Animos|Mags|Huntress|Hephaestus|Lord of Loss|John Combs|Mama Mathers|Monokeros|Goddess|Boundless|Paris|Tress|Harris|Antares|Nieves|Backwoods|Midas|Mrs. Sims|Ms. Stillons|Chuckles|Amias|Semiramis)’(?!s)/g,
     "$1’s"
   );
 
+  // Note: if the "s" is unvoiced, as in Marquis, then it doesn't get the second "s".
+  xml = xml.replace(/Marquis’s/g, "Marquis’");
+
   // This one is not just missing the extra "s"; it's often misplaced.
   xml = xml.replace(/Warden’s/g, "Wardens’");