diff --git a/mpv/input.conf b/mpv/input.conf
index 3227996..b01cb0b 100644
--- a/mpv/input.conf
+++ b/mpv/input.conf
@@ -6,3 +6,7 @@ alt+5 set window-scale 2.0
 alt+6 set window-scale 2.25
 alt+7 set window-scale 3.0
 alt+8 set window-scale 4.0
+9 add volume -3
+/ add volume -3
+0 add volume 3
+* add volume 3