diff --git a/resources/templates/provision/yealink/t21p/y000000000052.cfg b/resources/templates/provision/yealink/t21p/y000000000052.cfg
index 6ede924247..aa5bcd3736 100644
--- a/resources/templates/provision/yealink/t21p/y000000000052.cfg
+++ b/resources/templates/provision/yealink/t21p/y000000000052.cfg
@@ -869,6 +869,9 @@ phone_setting.headsetkey_mode =
 #Enable or disabled mail power led flash. 0-Disabled, 1-Enabled.
 phone_setting.mail_power_led_flash_enable = 1
 
+#Disable missed call power led flash 0-Disabled, 1-Enabled
+phone_setting.missed_call_power_led_flash.enable = 0
+
 #######################################################################################
 ##                                   Phone Setting UI                                ##
 #######################################################################################