diff --git a/udev/udev.xml b/udev/udev.xml
index 6f32f2164f..04e98e8963 100644
--- a/udev/udev.xml
+++ b/udev/udev.xml
@@ -612,9 +612,9 @@
           <term><option>$result</option>, <option>%c</option></term>
           <listitem>
             <para>The string returned by the external program requested with PROGRAM.
-            A single part of the string, separated by a space character may be selected
+            A single part of the string, separated by a space character, may be selected
             by specifying the part number as an attribute: <option>%c{N}</option>.
-            If the number is followed by the '+' char this part plus all remaining parts
+            If the number is followed by the '+' char, this part plus all remaining parts
             of the result string are substituted: <option>%c{N+}</option></para>
           </listitem>
         </varlistentry>