diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index 55280f6badb..54bf221fc26 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -956,7 +956,7 @@
             <span class="oe_form_m2o_follow"/>
         </t>
         <t t-if="!widget.get('effective_readonly')">
-            <a href="#" class="oe_m2o_cm_button oe_e oe_right">/</a>
+            <a href="#" tabindex="-1" class="oe_m2o_cm_button oe_e oe_right">/</a>
             <div>
                 <input type="text"
                     t-att-id="widget.id_for_label"