diff --git a/addons/web/views/webclient_templates.xml b/addons/web/views/webclient_templates.xml
index a296d5f39a7..b47474197db 100644
--- a/addons/web/views/webclient_templates.xml
+++ b/addons/web/views/webclient_templates.xml
@@ -322,7 +322,7 @@
     </template>
 
     <template id="debug_icon" name="Debug Icon">
-        <t t-if="debug">
+        <t t-if="debug" t-nocache="The query strings and debug mode can change for the same page and the same rendering.">
             <t t-set="debug_mode_help" t-value="' (%s)' % debug if debug != '1' else ''"/>
             <a t-attf-href="?#{keep_query('*', debug='')}" t-attf-title="Debug mode is activated#{debug_mode_help}. Click here to exit debug mode."
                class="o_debug_mode"><span class="fa fa-bug"/></a>
diff --git a/addons/website/tests/test_page.py b/addons/website/tests/test_page.py
index 3633fda437d..8f84fdc2688 100644
--- a/addons/website/tests/test_page.py
+++ b/addons/website/tests/test_page.py
@@ -303,3 +303,12 @@ class WithContext(HttpCase):
         root_html = html.fromstring(r.content)
         canonical_url = root_html.xpath('//link[@rel="canonical"]')[0].attrib['href']
         self.assertEqual(canonical_url, website.domain + "/")
+
+    def test_t_cache_footer_debug_link(self):
+        # Debug link (flag) should be use the current url.
+        self.url_open('/')
+        self.url_open('/contactus')
+        r = self.url_open('/?debug=1')
+        self.assertIn('<a class="o_debug_mode" href="?debug="', r.text)
+        r = self.url_open('/contactus?debug=1')
+        self.assertIn('<a class="o_debug_mode" href="?debug="', r.text)