diff --git a/AWS-IoT.md b/AWS-IoT.md
index 7753d8d3..b61b4f81 100644
--- a/AWS-IoT.md
+++ b/AWS-IoT.md
@@ -338,6 +338,11 @@ AWS IoT Connection, with EC Private Key, full CA validation (easier to configure
 * **1.0s** at 160MHz
 * **1.7s** at 80 MHz
 
+Letsencrypt based server (Mosquitto for ex), simple fingerprint validation:
+
+* **0.6s** at 160MHz
+* **0.9s** at 80MHz
+
 Letsencrypt based server (Mosquitto for ex), with full CA validation (easier to configure than fingerprint):
 
 * **0.7s** at 160MHz