diff --git a/reference/strings/functions/substr-compare.xml b/reference/strings/functions/substr-compare.xml
index 0382917971..6f3480c5fe 100644
--- a/reference/strings/functions/substr-compare.xml
+++ b/reference/strings/functions/substr-compare.xml
@@ -3,7 +3,7 @@
 <refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.substr-compare">
  <refnamediv>
   <refname>substr_compare</refname>
-  <refpurpose>Binary safe comparison of 2 strings from an offset, up to length characters</refpurpose>
+  <refpurpose>Binary safe comparison of two strings from an offset, up to length characters</refpurpose>
  </refnamediv>
  
  <refsect1 role="description">