diff --git a/addons/email_template/email_template.py b/addons/email_template/email_template.py
index f43beef566e1700983c8ce787b98fe3a7e32f6d2..8f59f148c2f42a4165550d19c2d10424773f7887 100644
--- a/addons/email_template/email_template.py
+++ b/addons/email_template/email_template.py
@@ -460,7 +460,7 @@ class email_template(osv.osv):
                 # body: add user signature, sanitize
                 if 'body_html' in fields and template.user_signature:
                     signature = self.pool.get('res.users').browse(cr, uid, uid, context).signature
-                    values['body_html'] = tools.append_content_to_html(values['body_html'], signature)
+                    values['body_html'] = tools.append_content_to_html(values['body_html'], signature, plaintext=False)
                 if values.get('body_html'):
                     values['body'] = tools.html_sanitize(values['body_html'])
                 # technical settings