diff --git a/sys/tools/sound/feeder_eq_mkfilter.awk b/sys/tools/sound/feeder_eq_mkfilter.awk
index f956ffe1d082..f81390aef476 100644
--- a/sys/tools/sound/feeder_eq_mkfilter.awk
+++ b/sys/tools/sound/feeder_eq_mkfilter.awk
@@ -300,9 +300,8 @@ BEGIN {
 		split(arg[i++], subarg, ",");
 		FEEDEQ_TREBLE_SFREQ = 1.0 * subarg[1];
 		FEEDEQ_TREBLE_SLOPE = 1.0 * subarg[2];
-		split(arg[i++], subarg, ",");
-		FEEDEQ_BASS_SFREQ = 1.0 * subarg[1];
-		FEEDEQ_BASS_SLOPE = 1.0 * subarg[2];
+		FEEDEQ_BASS_SFREQ = 1.0 * subarg[3];
+		FEEDEQ_BASS_SLOPE = 1.0 * subarg[4];
 		split(arg[i++], subarg, ",");
 		FEEDEQ_GAIN_MIN = floor(1.0 * subarg[1]);
 		FEEDEQ_GAIN_MAX = floor(1.0 * subarg[2]);