diff --git a/themes/powerarrow-dark/theme.lua b/themes/powerarrow-dark/theme.lua
index 78204b4..29bc468 100644
--- a/themes/powerarrow-dark/theme.lua
+++ b/themes/powerarrow-dark/theme.lua
@@ -241,6 +241,16 @@ theme.volume = lain.widget.alsa({
         widget:set_markup(markup.font(theme.font, " " .. volume_now.level .. "% "))
     end
 })
+theme.volume.widget:buttons(awful.util.table.join(
+                               awful.button({}, 4, function ()
+                                     awful.util.spawn("amixer set Master 1%+")
+                                     theme.volume.update()
+                               end),
+                               awful.button({}, 5, function ()
+                                     awful.util.spawn("amixer set Master 1%-")
+                                     theme.volume.update()
+                               end)
+))
 
 -- Net
 local neticon = wibox.widget.imagebox(theme.widget_net)