diff --git a/config.def.h b/config.def.h
index a5dc95d..f0b774a 100644
--- a/config.def.h
+++ b/config.def.h
@@ -63,8 +63,8 @@ static const char *webcmd[]     = { "/usr/lib/firefox/firefox", NULL };
 static const char *volup[]      = { "/usr/bin/pactl", "set-sink-volume", "@DEFAULT_SINK@", "+5%", NULL};
 static const char *voldown[]    = { "/usr/bin/pactl", "set-sink-volume", "@DEFAULT_SINK@", "-5%", NULL};
 static const char *volmute[]    = { "/usr/bin/pactl", "set-sink-mute", "0", "toggle", NULL};
-static const char *brightup[]   = { "/usr/bin/xbacklight", "-inc", "10%", NULL};
-static const char *brightdown[] = { "/usr/bin/xbacklight", "-dec", "10%", NULL};
+static const char *brightup[]   = { "/usr/bin/brightnessctl", "set", "10%+", NULL};
+static const char *brightdown[] = { "/usr/bin/brightnessctl", "set", "10%-", NULL};
 
 static Key keys[] = {
 	/* modifier                     key                   function        argument */