diff --git a/include/class.thread.php b/include/class.thread.php
index c009ed2fbe4c4323a1138b0f6cdb2ac665a62aa0..b57da97133ac53e51f11bb8fd87a3ed6370ef1a6 100644
--- a/include/class.thread.php
+++ b/include/class.thread.php
@@ -1427,7 +1427,7 @@ class TextThreadBody extends ThreadBody {
 }
 class HtmlThreadBody extends ThreadBody {
     function __construct($body, $options=array()) {
-        if ($options['strip-embedded'])
+        if (!isset($options['strip-embedded']) || $options['strip-embedded'])
             $body = $this->extractEmbeddedHtmlImages($body);
         parent::__construct($body, 'html', $options);
     }