diff --git a/docs/grub.texi b/docs/grub.texi
index 1513beafa..bcc8462e3 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -1114,12 +1114,6 @@ grub> @kbd{initrd16 /initrd}
 Finally, run the command @command{boot} (@pxref{boot}).
 @end enumerate
 
-@strong{Caution:} If you use an initrd and specify the @samp{mem=}
-option to the kernel to let it use less than actual memory size, you
-will also have to specify the same memory size to GRUB. To let GRUB know
-the size, run the command @command{uppermem} @emph{before} loading the
-kernel. @xref{uppermem}, for more information.
-
 
 @node NetBSD
 @subsection NetBSD
@@ -4030,7 +4024,6 @@ you forget a command, you can run the command @command{help}
 * true::                        Do nothing, successfully
 * trust::                       Add public key to list of trusted keys
 * unset::                       Unset an environment variable
-* uppermem::                    Set the upper memory size
 @comment * vbeinfo::                     List available video modes
 * verify_detached::             Verify detached digital signature
 * videoinfo::                   List available video modes
@@ -5348,12 +5341,6 @@ Unset the environment variable @var{envvar}.
 @end deffn
 
 
-@node uppermem
-@subsection uppermem
-
-This command is not yet implemented for GRUB 2, although it is planned.
-
-
 @ignore
 @node vbeinfo
 @subsection vbeinfo