diff --git a/clock.c b/clock.c
index 0856f81..73cf016 100644
--- a/clock.c
+++ b/clock.c
@@ -819,7 +819,9 @@ struct clock *clock_create(struct config *config, int phc_index,
 
 	snprintf(udsif->name, sizeof(udsif->name), "%s", uds_path);
 	udsif->transport = TRANS_UDS;
-	udsif->delay_filter_length = 1;
+	if (config_set_section_int(config, udsif->name, "delay_filter_length", 1)) {
+		return NULL;
+	}
 
 	c->config = config;
 	c->free_running = dds->free_running;
@@ -874,7 +876,7 @@ struct clock *clock_create(struct config *config, int phc_index,
 	c->servo_state = SERVO_UNLOCKED;
 	c->servo_type = servo;
 	c->tsproc = tsproc_create(dds->tsproc_mode, dds->delay_filter,
-				  dds->delay_filter_length);
+				  config_get_int(config, NULL, "delay_filter_length"));
 	if (!c->tsproc) {
 		pr_err("Failed to create time stamp processor");
 		return NULL;
diff --git a/config.c b/config.c
index b3ca2b9..f9d5777 100644
--- a/config.c
+++ b/config.c
@@ -95,6 +95,7 @@ struct config_item config_tab[] = {
 	GLOB_ITEM_INT("assume_two_step", 0, 0, 1),
 	GLOB_ITEM_INT("check_fup_sync", 0, 0, 1),
 	PORT_ITEM_INT("delayAsymmetry", 0, INT_MIN, INT_MAX),
+	PORT_ITEM_INT("delay_filter_length", 10, 1, INT_MAX),
 	PORT_ITEM_INT("egressLatency", 0, INT_MIN, INT_MAX),
 	GLOB_ITEM_DBL("first_step_threshold", 0.00002, 0.0, DBL_MAX),
 	PORT_ITEM_INT("follow_up_info", 0, 0, 1),
@@ -355,12 +356,6 @@ static enum parser_result parse_port_setting(struct config *cfg,
 		else
 			return BAD_VALUE;
 
-	} else if (!strcmp(option, "delay_filter_length")) {
-		r = get_ranged_int(value, &val, 1, INT_MAX);
-		if (r != PARSED_OK)
-			return r;
-		iface->delay_filter_length = val;
-
 	} else if (!strcmp(option, "boundary_clock_jbod")) {
 		r = get_ranged_int(value, &val, 0, 1);
 		if (r != PARSED_OK)
@@ -611,12 +606,6 @@ static enum parser_result parse_global_setting(const char *option,
 		else
 			return BAD_VALUE;
 
-	} else if (!strcmp(option, "delay_filter_length")) {
-		r = get_ranged_int(value, &val, 1, INT_MAX);
-		if (r != PARSED_OK)
-			return r;
-		cfg->dds.delay_filter_length = val;
-
 	} else if (!strcmp(option, "boundary_clock_jbod")) {
 		r = get_ranged_int(value, &val, 0, 1);
 		if (r != PARSED_OK)
@@ -810,7 +799,6 @@ void config_init_interface(struct interface *iface, struct config *cfg)
 	sk_get_ts_info(iface->name, &iface->ts_info);
 
 	iface->delay_filter = cfg->dds.delay_filter;
-	iface->delay_filter_length = cfg->dds.delay_filter_length;
 	iface->boundary_clock_jbod = cfg->dds.boundary_clock_jbod;
 }
 
diff --git a/config.h b/config.h
index c1ada46..df7b733 100644
--- a/config.h
+++ b/config.h
@@ -41,7 +41,6 @@ struct interface {
 	struct sk_ts_info ts_info;
 	enum tsproc_mode tsproc_mode;
 	enum filter_type delay_filter;
-	int delay_filter_length;
 	int boundary_clock_jbod;
 };
 
diff --git a/ds.h b/ds.h
index 678136f..30d33d8 100644
--- a/ds.h
+++ b/ds.h
@@ -61,7 +61,6 @@ struct default_ds {
 	struct clock_description clock_desc;
 	enum tsproc_mode tsproc_mode;
 	enum filter_type delay_filter;
-	int delay_filter_length;
 	int boundary_clock_jbod;
 };
 
diff --git a/port.c b/port.c
index b527492..ba3108d 100644
--- a/port.c
+++ b/port.c
@@ -2553,7 +2553,7 @@ struct port *port_open(int phc_index,
 
 	p->tsproc = tsproc_create(interface->tsproc_mode,
 				  interface->delay_filter,
-				  interface->delay_filter_length);
+				  config_get_int(cfg, p->name, "delay_filter_length"));
 	if (!p->tsproc) {
 		pr_err("Failed to create time stamp processor");
 		goto err_transport;
diff --git a/ptp4l.c b/ptp4l.c
index b7a1ef1..c68fd60 100644
--- a/ptp4l.c
+++ b/ptp4l.c
@@ -74,7 +74,6 @@ static struct config cfg_settings = {
 		},
 		.tsproc_mode = TSPROC_FILTER,
 		.delay_filter = FILTER_MOVING_MEDIAN,
-		.delay_filter_length = 10,
 		.boundary_clock_jbod = 0,
 	},