diff --git a/addons/spreadsheet_dashboard/static/src/bundle/dashboard_action/dashboard_action.scss b/addons/spreadsheet_dashboard/static/src/bundle/dashboard_action/dashboard_action.scss
index 520ef4dfd95..c27d9b273ca 100644
--- a/addons/spreadsheet_dashboard/static/src/bundle/dashboard_action/dashboard_action.scss
+++ b/addons/spreadsheet_dashboard/static/src/bundle/dashboard_action/dashboard_action.scss
@@ -72,6 +72,10 @@
 
             .o_multi_record_selector {
                 width: 100%;
+
+                .o_input{
+                    flex: 1 0 1rem;
+                }
             }
         }