diff --git a/default.cfg b/default.cfg
index f87b8d5..eeb0b48 100644
--- a/default.cfg
+++ b/default.cfg
@@ -30,8 +30,13 @@ tx_timestamp_retries	2
 rx_timestamp_l2only	0
 use_syslog		1
 verbose			0
+#
+# Servo Options
+#
 pi_proportional_const	0.0
 pi_integral_const	0.0
+pi_offset_const         0.0
+clock_servo             pi
 #
 # Transport options
 #
diff --git a/gPTP.cfg b/gPTP.cfg
index fab2694..07cc2c2 100644
--- a/gPTP.cfg
+++ b/gPTP.cfg
@@ -30,8 +30,13 @@ tx_timestamp_retries	2
 rx_timestamp_l2only	1
 use_syslog		1
 verbose			0
+#
+# Servo options
+#
 pi_proportional_const	0.0
 pi_integral_const	0.0
+pi_offset_const         0.0
+clock_servo             pi
 #
 # Transport options
 #