diff --git a/configs/open5gs/mme.yaml.in b/configs/open5gs/mme.yaml.in
index 409ee5c4e..722648dd6 100644
--- a/configs/open5gs/mme.yaml.in
+++ b/configs/open5gs/mme.yaml.in
@@ -435,5 +435,7 @@ usrsctp:
 #      value: 720  # 12 minutes * 60 = 720 seconds
 #    t3412:
 #      value: 3240 # 54 minutes * 60 = 3240 seconds
+#    t3423:
+#      value: 720  # 12 minutes * 60 = 720 seconds
 #
 time: