diff --git a/.config/openbox/rc.xml b/.config/openbox/rc.xml
index 97653b0..b979e44 100644
--- a/.config/openbox/rc.xml
+++ b/.config/openbox/rc.xml
@@ -317,6 +317,7 @@
         <command>gnome-terminal</command>
       </action>
     </keybind>
+    <!-- Find the sound card id by looking into /proc/asound/cards and pass it by using the -c option-->
     <keybind key="XF86AudioRaiseVolume">
       <action name="Execute">
         <execute>amixer set Master 5+ unmute</execute>