diff --git a/addons/web/static/src/core/domain_selector/domain_selector_root_node.xml b/addons/web/static/src/core/domain_selector/domain_selector_root_node.xml
index a72e7e141ca..303209b95a7 100644
--- a/addons/web/static/src/core/domain_selector/domain_selector_root_node.xml
+++ b/addons/web/static/src/core/domain_selector/domain_selector_root_node.xml
@@ -11,7 +11,7 @@
                 <span>Match <strong>all records</strong></span>
                 <t t-if="!props.readonly">
                     <button
-                        class="btn btn-sm btn-primary o_domain_add_first_node_button"
+                        class="btn btn-sm btn-primary o_domain_add_first_node_button ms-1"
                         t-on-click="() => this.insertNode('leaf')"
                     >
                         <i class="fa fa-plus"/> Add filter