diff --git a/tasmota/my_user_config.h b/tasmota/my_user_config.h
index d69039c10..7ef154d53 100644
--- a/tasmota/my_user_config.h
+++ b/tasmota/my_user_config.h
@@ -290,7 +290,8 @@
 // -- MQTT - TLS - AWS IoT ------------------------
 // Using TLS starting with version v6.5.0.16 compilation will only work using Core 2.4.2 and 2.5.2. No longer supported: 2.3.0
 //#define USE_MQTT_TLS                             // Use TLS for MQTT connection (+34.5k code, +7.0k mem and +4.8k additional during connection handshake)
-//  #define USE_MQTT_TLS_CA_CERT                   // Force full CA validation instead of fingerprints, slower, but simpler to use (+2.2k code, +1.9k mem during connection handshake)
+//  #define USE_MQTT_TLS_CA_CERT                   // Force full CA validation instead of fingerprints, slower, but simpler to use.  (+2.2k code, +1.9k mem during connection handshake)
+                                                   // This includes the LetsEncrypt CA in tasmota_ca.ino for verifying server certificates 
 //  #define USE_MQTT_TLS_FORCE_EC_CIPHER           // Force Elliptic Curve cipher (higher security) required by some servers (automatically enabled with USE_MQTT_AWS_IOT) (+11.4k code, +0.4k mem)
 //  #define USE_MQTT_AWS_IOT                       // Enable MQTT for AWS IoT - requires a private key (+11.9k code, +0.4k mem)
                                                  //   Note: you need to generate a private key + certificate per device and update 'tasmota/tasmota_aws_iot.cpp'