diff --git a/reference/spl/splpriorityqueue/extract.xml b/reference/spl/splpriorityqueue/extract.xml
index dab7fc71ae..5b3feac2c8 100644
--- a/reference/spl/splpriorityqueue/extract.xml
+++ b/reference/spl/splpriorityqueue/extract.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="splpriorityqueue.extract" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>SplPriorityQueue::extract</refname>
-  <refpurpose>Extracts a node from top of the heap and sift up.</refpurpose>
+  <refpurpose>Extracts a node from top of the heap and shift up.</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">