diff --git a/panels/power/power.ui b/panels/power/power.ui
index 6ab5404a1..96a344240 100644
--- a/panels/power/power.ui
+++ b/panels/power/power.ui
@@ -204,6 +204,7 @@
                 <property name="can_focus">False</property>
                 <property name="label" translatable="yes">Delay</property>
                 <property name="margin-left">20</property>
+                <property name="mnemonic_widget">suspend_on_battery_delay_combo</property>
                 <style>
                   <class name="dim-label"/>
                 </style>
@@ -221,6 +222,7 @@
                 <property name="can_focus">False</property>
                 <property name="label" translatable="yes">Delay</property>
                 <property name="margin-left">20</property>
+                <property name="mnemonic_widget">suspend_on_ac_delay_combo</property>
                 <style>
                   <class name="dim-label"/>
                 </style>