diff --git a/shell-completion/bash/systemctl b/shell-completion/bash/systemctl
index 3bdf4dc956b..3e51f34cbae 100644
--- a/shell-completion/bash/systemctl
+++ b/shell-completion/bash/systemctl
@@ -24,7 +24,7 @@ __systemctl() {
 
 __systemd_properties() {
         local mode=$1
-        { __systemctl $mode show;
+        { __systemctl -a $mode show;
          systemd --dump-configuration-items; } |
         while IFS='=' read -r key value; do
             [[ $value ]] && echo "$key"