diff --git a/qosmngr/files/airoha/lib/qos/qos.sh b/qosmngr/files/airoha/lib/qos/qos.sh
index bc4a6f0c0..80f0221fa 100755
--- a/qosmngr/files/airoha/lib/qos/qos.sh
+++ b/qosmngr/files/airoha/lib/qos/qos.sh
@@ -15,10 +15,6 @@ include /lib/ethernet
 . /lib/qos/shaper.sh
 . /lib/qos/airoha.sh
 
-get_burst_size_per_queue() {
-	echo "0"
-}
-
 # marking value be decimal for linux target as it uses set-mark whereas other
 # targets uses set-xmark, hence this function can't make it common
 ip_rule_get_converted_tos() {
diff --git a/qosmngr/files/broadcom/lib/qos/qos.sh b/qosmngr/files/broadcom/lib/qos/qos.sh
index dd61f6609..7d13d4299 100755
--- a/qosmngr/files/broadcom/lib/qos/qos.sh
+++ b/qosmngr/files/broadcom/lib/qos/qos.sh
@@ -34,10 +34,6 @@ get_port_number() {
 	done
 }
 
-get_burst_size_per_queue() {
-	echo "0"
-}
-
 # Function to handle a queue order and
 # update total number of queues
 handle_q_order() {
diff --git a/qosmngr/files/common/etc/uci-defaults/60-qos_config_generate b/qosmngr/files/common/etc/uci-defaults/60-qos_config_generate
index d969bbff6..d8446e651 100644
--- a/qosmngr/files/common/etc/uci-defaults/60-qos_config_generate
+++ b/qosmngr/files/common/etc/uci-defaults/60-qos_config_generate
@@ -32,7 +32,7 @@ generate_queue(){
 		uci set qos.@queue[-1].precedence="$order"
 		uci set qos.@queue[-1].scheduling="SP"
 		uci set qos.@queue[-1].rate="0"
-		uci set qos.@queue[-1].burst_size=$(get_burst_size_per_queue)
+		uci set qos.@queue[-1].burst_size="0"
 		uci set qos.@queue[-1].weight="1"
 	done
 
diff --git a/qosmngr/files/linux/lib/qos/qos.sh b/qosmngr/files/linux/lib/qos/qos.sh
index a9f049505..21d42f694 100755
--- a/qosmngr/files/linux/lib/qos/qos.sh
+++ b/qosmngr/files/linux/lib/qos/qos.sh
@@ -15,10 +15,6 @@ Q_COUNT=0
 SP_Q_PRIO=7
 SOQ_wgt=0
 
-get_burst_size_per_queue() {
-	echo "1500"
-}
-
 get_max_burst_size_per_queue() {
 	# maximum burst size for tc class
 	echo "4289999999"
@@ -137,10 +133,11 @@ handle_queue() {
 	config_get sc_alg "$qid" "scheduling"
 	config_get wgt "$qid" "weight" 1
 	config_get rate "$qid" "rate"
-	config_get bs "$qid" "burst_size"
+	config_get bs "$qid" "burst_size" 1500
 	config_get qsize "$qid" "queue_size" 1024
 
 	[ "$rate" == "0" ] && rate="$port_bw"
+	[ "$bs" == "0" ] && bs=1500
 
 	bs=$(( bs * 8  ))
 	rate_bs=$(( rate * 25 ))