Index: /trunk/doc/manual/en_US/user_Installation.xml
===================================================================
--- /trunk/doc/manual/en_US/user_Installation.xml	(revision 38021)
+++ /trunk/doc/manual/en_US/user_Installation.xml	(revision 38022)
@@ -649,5 +649,5 @@
       <computeroutput>vboxusers</computeroutput> during installation. Any
       system user who is going to use USB devices from VirtualBox guests must
-      be member of that group. A user can be made member of the group
+      be a member of that group. A user can be made a member of the group
       <computeroutput>vboxusers</computeroutput> through the GUI user/group
       management or at the command line with</para>