diff --git a/runbot/common.py b/runbot/common.py
index 27a1b5bc..d76b57c4 100644
--- a/runbot/common.py
+++ b/runbot/common.py
@@ -11,8 +11,8 @@ import os
 
 from collections import OrderedDict
 from datetime import timedelta
-
 from babel.dates import format_timedelta
+from markupsafe import Markup
 from werkzeug import utils
 
 from odoo.tools.misc import DEFAULT_SERVER_DATETIME_FORMAT
@@ -151,5 +151,5 @@ def pseudo_markdown(text):
     def code_replace(match):
         return f'<code>{codes[int(match.group(1))]}</code>'
 
-    text = re.sub(r'<code>(\d+)</code>', code_replace, text, flags=re.DOTALL)
+    text = Markup(re.sub(r'<code>(\d+)</code>', code_replace, text, flags=re.DOTALL))
     return text
diff --git a/runbot/tests/test_build.py b/runbot/tests/test_build.py
index 1a70bbe0..8452d597 100644
--- a/runbot/tests/test_build.py
+++ b/runbot/tests/test_build.py
@@ -180,8 +180,8 @@ class TestBuildResult(RunbotCase):
         })
         self.assertEqual(build.md_description, 'A nice <strong>description</strong>')
 
-        build.description = "<script>console.log('foo')</script>"
-        self.assertEqual(build.md_description, "&lt;script&gt;console.log('foo')&lt;/script&gt;")
+        build.description = "<script>console.log(foo)</script>"
+        self.assertEqual(build.md_description, "&lt;script&gt;console.log(foo)&lt;/script&gt;")
 
     @patch('odoo.addons.runbot.models.build.BuildResult._get_available_modules')
     def test_filter_modules(self, mock_get_available_modules):