diff --git a/syncplay/constants.py b/syncplay/constants.py
index a49a148..4cd8f3d 100644
--- a/syncplay/constants.py
+++ b/syncplay/constants.py
@@ -111,9 +111,9 @@ STYLE_NOFILEITEM_COLOR = 'blue'
 MPLAYER_SLAVE_ARGS = ['-slave', '--hr-seek=always', '-nomsgcolor', '-msglevel', 'all=1:global=4:cplayer=4', '-af', 'scaletempo']
 # --quiet works with both mpv 0.2 and 0.3
 MPV_SLAVE_ARGS = ['--hr-seek=always', '--quiet', '--keep-open', '-af', 'scaletempo']
-MPV_SLAVE_ARGS_WINDOWS = ['--slave-broken', '-af', 'scaletempo']
-MPV_SLAVE_ARGS_NONWINDOWS = ['--input-terminal=no','--input-file=/dev/stdin', '-af', 'scaletempo']
-MPV_SLAVE_ARGS_NEW = ['--term-playing-msg=<SyncplayUpdateFile>\nANS_filename=${filename}\nANS_length=${=length}\nANS_path=${path}\n</SyncplayUpdateFile>', '-af', 'scaletempo']
+MPV_SLAVE_ARGS_WINDOWS = ['--slave-broken']
+MPV_SLAVE_ARGS_NONWINDOWS = ['--input-terminal=no','--input-file=/dev/stdin']
+MPV_SLAVE_ARGS_NEW = ['--term-playing-msg=<SyncplayUpdateFile>\nANS_filename=${filename}\nANS_length=${=length}\nANS_path=${path}\n</SyncplayUpdateFile>']
 MPV_NEW_VERSION = False
 VLC_SLAVE_ARGS = ['--extraintf=luaintf', '--lua-intf=syncplay', '--no-quiet', '--no-input-fast-seek',
                   '--play-and-pause', '--start-time=0']