diff --git a/reference/spl/splheap/extract.xml b/reference/spl/splheap/extract.xml
index 2a4b027de8..53930118c3 100644
--- a/reference/spl/splheap/extract.xml
+++ b/reference/spl/splheap/extract.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="splheap.extract" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>SplHeap::extract</refname>
-  <refpurpose>Extracts a node from top of the heap and shift up.</refpurpose>
+  <refpurpose>Extracts a node from top of the heap and sift up.</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">