diff --git a/Dockerfile b/Dockerfile
index 4cea3c06..2ccf6800 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -54,6 +54,7 @@ RUN for verb in help \
   deactivate \
   deactivate-account \
   set-notify \
+  set-default-ca \
   ; do \
     printf -- "%b" "#!/usr/bin/env sh\n/root/.acme.sh/acme.sh --${verb} --config-home /acme.sh \"\$@\"" >/usr/local/bin/--${verb} && chmod +x /usr/local/bin/--${verb} \
   ; done
diff --git a/acme.sh b/acme.sh
index b5fafa4b..ad29669c 100755
--- a/acme.sh
+++ b/acme.sh
@@ -6430,7 +6430,8 @@ Commands:
   --cron                   Run cron job to renew all the certs.
   --set-notify             Set the cron notification hook, level or mode.
   --deactivate             Deactivate the domain authz, professional use.
-  --set-default-ca         Used with '--server', to set the default CA to use to use.
+  --set-default-ca         Used with '--server', Set the default CA to use.
+                           See: $_SERVER_WIKI
 
 
 Parameters: