diff --git a/lib/convert.js b/lib/convert.js
index e1503cf..5e702c8 100644
--- a/lib/convert.js
+++ b/lib/convert.js
@@ -305,6 +305,10 @@ function getBodyXML(chapter, contentEl) {
   // ReSound's name is sometimes miscapitalized. The word is never used in a non-name context.
   xml = xml.replace(/Resound/g, "ReSound");
 
+  // "patrol block" is capitalized three different ways: "patrol block", "Patrol block", and "Patrol Block". I can see
+  // arguments for any of them, so let's go with the most prevalent: "patrol block".
+  xml = xml.replace(/([^ ]) Patrol (?:B|b)lock/g, "$1 patrol block");
+
   // This is sometimes missing its capitalization.
   xml = xml.replace(/the birdcage/g, "the Birdcage");