diff --git a/web_src/js/components/ActionRunView.test.ts b/web_src/js/components/ActionRunView.test.ts
index 1f972b73c0d..b625b15e717 100644
--- a/web_src/js/components/ActionRunView.test.ts
+++ b/web_src/js/components/ActionRunView.test.ts
@@ -16,6 +16,7 @@ test('LogLineMessage', () => {
     '::warning file=test.js,line=1::foo': '<span class="log-msg log-cmd-warning"><span class="log-msg-label">Warning:</span><span> foo</span></span>',
     '::notice::foo': '<span class="log-msg log-cmd-notice"><span class="log-msg-label">Notice:</span><span> foo</span></span>',
     '::debug::foo': '<span class="log-msg log-cmd-debug"><span class="log-msg-label">Debug:</span><span> foo</span></span>',
+    '##[command] foo': '<span class="log-msg log-cmd-command"> foo</span>',
     '[command] foo': '<span class="log-msg log-cmd-command"> foo</span>',
 
     // hidden is special, it is actually skipped before creating
diff --git a/web_src/js/components/ActionRunView.ts b/web_src/js/components/ActionRunView.ts
index 91fe8329bd0..a9a6695241a 100644
--- a/web_src/js/components/ActionRunView.ts
+++ b/web_src/js/components/ActionRunView.ts
@@ -20,6 +20,7 @@ const LogLinePrefixCommandMap: Record<string, LogLineCommandName> = {
   '##[warning]': 'warning',
   '##[notice]': 'notice',
   '##[debug]': 'debug',
+  '##[command]': 'command',
   '[command]': 'command',
 
   // https://github.com/actions/toolkit/blob/master/docs/commands.md