diff --git a/tuning/static/majak/css/tuning.css b/tuning/static/majak/css/tuning.css
new file mode 100644
index 0000000000000000000000000000000000000000..9fa5733ba733a8f83c45bdbc951c477996050533
--- /dev/null
+++ b/tuning/static/majak/css/tuning.css
@@ -0,0 +1,4 @@
+/* fix UI on users's groups config */
+#id_groups label {
+    width: 100%;
+}
diff --git a/tuning/templates/wagtailadmin/admin_base.html b/tuning/templates/wagtailadmin/admin_base.html
index 8c39bd9644a0bc0843e3d29a90e67ef824188b69..2662c5f22cd8342a95c1c8ccaef916ad2c03a63e 100644
--- a/tuning/templates/wagtailadmin/admin_base.html
+++ b/tuning/templates/wagtailadmin/admin_base.html
@@ -1,6 +1,11 @@
 {% extends "wagtailadmin/admin_base.html" %}
 {% load static %}
 
+{% block css %}
+  {{ block.super }}
+  <link rel="stylesheet" href="{% static "majak/css/tuning.css" %}" type="text/css" />
+{% endblock %}
+
 {% block branding_title %}Maják{% endblock %}
 
 {% block branding_favicon %}