diff --git a/install/fpm/configuration.xml b/install/fpm/configuration.xml
index b1f4b98eb2..5f380e7735 100644
--- a/install/fpm/configuration.xml
+++ b/install/fpm/configuration.xml
@@ -448,7 +448,7 @@
      </varlistentry>
     </variablelist>
     <para>
-     It's possible to pass additional environment variables and update PHP settings of a certian pool.
+     It's possible to pass additional environment variables and update PHP settings of a certain pool.
      To do this, you need to add the following options to <filename>php-fpm.conf</filename>
      <example>
       <title>Passing environment variables and PHP settings to a pool</title>