diff --git a/extended-toc.php b/extended-toc.php
index 23b198d..49910f8 100644
--- a/extended-toc.php
+++ b/extended-toc.php
@@ -420,7 +420,7 @@ if (!class_exists('ExToC')) {
 
             /** Extract headings from every pages */
             for ($pagenum = 1; $pagenum <= count($this->pages); $pagenum++) {
-                $headers .= $this->exctract_headings($pagenum);
+                $headers .= $this->extract_headings($pagenum);
             }
 
             return $headers;
@@ -431,7 +431,7 @@ if (!class_exists('ExToC')) {
             $this->pages = preg_split("/<!--nextpage-->/msuU", $this->fullcontent);
         }
 
-        private function exctract_headings($pagenum) {
+        private function extract_headings($pagenum) {
             /** find all header tags within the page * */
             preg_match_all('/(<h([1-6]{1})[^>]*>).*<\/h\2>/msuU', $this->pages[$pagenum - 1], $matches, PREG_SET_ORDER);