diff --git a/data/interfaces/xfpm-settings.ui b/data/interfaces/xfpm-settings.ui
index bd09980..9472163 100644
--- a/data/interfaces/xfpm-settings.ui
+++ b/data/interfaces/xfpm-settings.ui
@@ -907,6 +907,7 @@
                                     <property name="primary_icon_activatable">False</property>
                                     <property name="secondary_icon_activatable">False</property>
                                     <property name="adjustment">critical-power-level-spin-adjustment</property>
+                                    <property name="width-chars">6</property>
                                     <signal name="output" handler="critical_spin_output_cb" swapped="no"/>
                                     <signal name="value-changed" handler="critical_level_value_changed_cb" swapped="no"/>
                                   </object>