diff --git a/shell-completion/zsh/_systemctl.in b/shell-completion/zsh/_systemctl.in
index d35c900f10..489793e8bb 100644
--- a/shell-completion/zsh/_systemctl.in
+++ b/shell-completion/zsh/_systemctl.in
@@ -375,14 +375,14 @@ _arguments -s \
     '--system[Connect to system manager]' \
     '--user[Connect to user service manager]' \
     "--no-wall[Don't send wall message before halt/power-off/reboot]" \
-    '--global[Enable/disable unit files globally]' \
+    '--global[Enable/disable/mask unit files globally]' \
     "--no-reload[When enabling/disabling unit files, don't reload daemon configuration]" \
     '--no-ask-password[Do not ask for system passwords]' \
     '--kill-who=[Who to send signal to]:killwho:(main control all)' \
     {-s+,--signal=}'[Which signal to send]:signal:_signals' \
     {-f,--force}'[When enabling unit files, override existing symlinks. When shutting down, execute action immediately]' \
-    '--root=[Enable unit files in the specified root directory]:directory:_directories' \
-    '--runtime[Enable unit files only temporarily until next reboot]' \
+    '--root=[Enable/disable/mask unit files in the specified root directory]:directory:_directories' \
+    '--runtime[Enable/disable/mask unit files only temporarily until next reboot]' \
     {-H+,--host=}'[Operate on remote host]:userathost:_sd_hosts_or_user_at_host' \
     {-P,--privileged}'[Acquire privileges before execution]' \
     {-n+,--lines=}'[Journal entries to show]:number of entries' \
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index f218bb05f2..265983536d 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -7153,12 +7153,14 @@ static void systemctl_help(void) {
                "     --no-pager       Do not pipe output into a pager\n"
                "     --no-ask-password\n"
                "                      Do not ask for system passwords\n"
-               "     --global         Enable/disable unit files globally\n"
-               "     --runtime        Enable unit files only temporarily until next reboot\n"
+               "     --global         Enable/disable/mask unit files globally\n"
+               "     --runtime        Enable/disable/mask unit files temporarily until next\n"
+               "                      reboot\n"
                "  -f --force          When enabling unit files, override existing symlinks\n"
                "                      When shutting down, execute action immediately\n"
                "     --preset-mode=   Apply only enable, only disable, or all presets\n"
-               "     --root=PATH      Enable unit files in the specified root directory\n"
+               "     --root=PATH      Enable/disable/mask unit files in the specified root\n"
+               "                      directory\n"
                "  -n --lines=INTEGER  Number of journal entries to show\n"
                "  -o --output=STRING  Change journal output mode (short, short-precise,\n"
                "                             short-iso, short-iso-precise, short-full,\n"