diff --git a/src/internationalization/PhutilTranslator.php b/src/internationalization/PhutilTranslator.php
--- a/src/internationalization/PhutilTranslator.php
+++ b/src/internationalization/PhutilTranslator.php
@@ -106,7 +106,8 @@
     // any escaping necessary and output HTML.
     $is_html = false;
     foreach ($args as $arg) {
-      if ($arg instanceof PhutilSafeHTML) {
+      if ($arg instanceof PhutilSafeHTML ||
+          $arg instanceof PhutilSafeHTMLProducerInterface) {
         $is_html = true;
         break;
       }