diff --git a/lib/convert-worker.js b/lib/convert-worker.js
index 30add8e..11ed960 100644
--- a/lib/convert-worker.js
+++ b/lib/convert-worker.js
@@ -655,6 +655,10 @@ function fixHyphens(xml) {
   // in the books.
   xml = xml.replace(/hand to hand(?= [a-z])/g, "hand-to-hand");
 
+  // This is usually wrong but sometimes correct. The lookarounds avoid specific cases where it's referring to an actual
+  // second in a series of guesses.
+  xml = xml.replace(/(?<!my |that )([Ss]econd) guess(?!es)/g, "$1-guess");
+
   // This is usually correct but sometimes wrong.
   xml = xml.replace(/neo /g, "neo-");