diff --git a/plugins/systemadmin/README.md b/plugins/systemadmin/README.md
index edca4d87d..243db03f2 100644
--- a/plugins/systemadmin/README.md
+++ b/plugins/systemadmin/README.md
@@ -16,8 +16,8 @@ plugins=(... systemadmin)
 | clr     | `clear; echo Currently logged in on $TTY, as $USER in directory $PWD.` | Clears the screen and prints the current user, TTY, and directory  |
 | path    | `print -l $path`                                                       | Displays PATH with each entry on a separate line                   |
 | mkdir   | `mkdir -pv`                                                            | Automatically create parent directories and display verbose output |
-| psmem   | `ps -e -orss=,args= \| sort -b -k1,1n`                                 | Display the processes using the most memory                        |
-| psmem10 | `ps -e -orss=,args= \| sort -b -k1,1n \| head -10`                     | Display the top 10 processes using the most memory                 |
+| psmem   | `ps -e -orss=,args= \| sort -b -k1 -nr`                                | Display the processes using the most memory                        |
+| psmem10 | `ps -e -orss=,args= \| sort -b -k1 -nr \| head -10`                    | Display the top 10 processes using the most memory                 |
 | pscpu   | `ps -e -o pcpu,cpu,nice,state,cputime,args \|sort -k1 -nr`             | Display the top processes using the most CPU                       |
 | pscpu10 | `ps -e -o pcpu,cpu,nice,state,cputime,args \|sort -k1 -nr \| head -10` | Display the top 10 processes using the most CPU                    |
 | hist10  | `print -l ${(o)history%% *} \| uniq -c \| sort -nr \| head -n 10`      | Display the top 10 most used commands in the history               |
diff --git a/plugins/systemadmin/systemadmin.plugin.zsh b/plugins/systemadmin/systemadmin.plugin.zsh
index ded25c3a9..03064c035 100644
--- a/plugins/systemadmin/systemadmin.plugin.zsh
+++ b/plugins/systemadmin/systemadmin.plugin.zsh
@@ -25,8 +25,8 @@ alias clr='clear; echo Currently logged in on $TTY, as $USER in directory $PWD.'
 alias path='print -l $path'
 alias mkdir='mkdir -pv'
 # get top process eating memory
-alias psmem='ps -e -orss=,args= | sort -b -k1,1n'
-alias psmem10='ps -e -orss=,args= | sort -b -k1,1n| head -10'
+alias psmem='ps -e -orss=,args= | sort -b -k1 -nr'
+alias psmem10='ps -e -orss=,args= | sort -b -k1 -nr | head -10'
 # get top process eating cpu if not work try excute : export LC_ALL='C'
 alias pscpu='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1,1n -nr'
 alias pscpu10='ps -e -o pcpu,cpu,nice,state,cputime,args|sort -k1,1n -nr | head -10'