diff --git a/chirpstack/src/cmd/configfile.rs b/chirpstack/src/cmd/configfile.rs
index 027d7ece..f7b785cb 100644
--- a/chirpstack/src/cmd/configfile.rs
+++ b/chirpstack/src/cmd/configfile.rs
@@ -355,7 +355,7 @@ pub fn run() {
       # Certificate lifetime.
       #
       # This defines how long (after generating) the certificate remains valid.
-      client_cert_lifetime="{{ integration.mqtt.client_cert_lifetime }}"
+      client_cert_lifetime="{{ integration.mqtt.client.client_cert_lifetime }}"
 
 
   # PostgreSQL integration configuration.