diff --git a/lib/index.js b/lib/index.js
index 4ca10e4..e6e3e7b 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -64,6 +64,7 @@ class Documentation {
 class Page {
   key
   title
+  titleKey
   body
   sections = []
   #documentation
@@ -77,6 +78,11 @@ class Page {
     this.#index = index
     this.#entries = entries
     this.title = header.text
+    this.titleKey = this.title
+      .replace(/[^a-zA-Z0-9]+/g, ' ')
+      .trim()
+      .replace(/\s+/g, '-')
+      .toLowerCase()
   }
 
   async load () {
@@ -152,11 +158,7 @@ class Section {
 
     // assigns unique key value for section
     const prior = [
-      this.page.title
-        .replace(/[^a-zA-Z0-9]+/g, ' ')
-        .trim()
-        .replace(/\s+/g, '-')
-        .toLowerCase(),
+      this.page.titleKey,
       ...this.page.sections
         .map(section => [section, ...section.subsections])
         .flat()