diff --git a/reference/exec/functions/proc-nice.xml b/reference/exec/functions/proc-nice.xml
index 4b455575c9..84becd5ef6 100644
--- a/reference/exec/functions/proc-nice.xml
+++ b/reference/exec/functions/proc-nice.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
   <refentry id='function.proc-nice'>
    <refnamediv>
     <refname>proc_nice</refname>
@@ -14,10 +14,12 @@
       <methodparam><type>int</type><parameter>increment</parameter></methodparam>
      </methodsynopsis>
     <para>
-     <function>proc_nice</function> increases the priority of the current
-     process.  You can use a negative <parameter>increment</parameter> to
-     decrease the priority. If an error occurs, like the user lacks permission
-     to change the priority, an error of level
+     <function>proc_nice</function> changes the priority of the current
+     process by the amount specified in <parameter>increment</parameter>. A
+     positive <parameter>increment</parameter> will lower the priority of the
+     current process, whereas a negative <parameter>increment</parameter>
+     will raise the priority. If an error occurs, like the user lacks
+     permission to change the priority, an error of level
      <constant>E_WARNING</constant> is generated and &false; is returned.
      Otherwise, &true; is returned.
     </para>