diff --git a/src/Twilio/Clients/TwilioRestClient.cs b/src/Twilio/Clients/TwilioRestClient.cs
index e81b1bceb..3acc67585 100644
--- a/src/Twilio/Clients/TwilioRestClient.cs
+++ b/src/Twilio/Clients/TwilioRestClient.cs
@@ -204,9 +204,9 @@ private static Response ProcessResponse(Response response)
         }
 
         /// <summary>
-        /// Test that this application can use updated SSL certificates on
-        /// api.twilio.com:8443. It's a bit easier to call this method from
-        /// TwilioClient.ValidateSslCertificate().
+        /// Test if your environment is impacted by a TLS or certificate change 
+        /// by sending an HTTP request to the test endpoint tls-test.twilio.com:443
+        /// It's a bit easier to call this method from TwilioClient.ValidateSslCertificate().
         /// </summary>
         public static void ValidateSslCertificate()
         {
diff --git a/src/Twilio/Twilio.cs b/src/Twilio/Twilio.cs
index 3d3aa03b9..71e5a605c 100644
--- a/src/Twilio/Twilio.cs
+++ b/src/Twilio/Twilio.cs
@@ -184,8 +184,8 @@ public static void Invalidate()
         }
 
         /// <summary>
-        /// Validates that the Twilio Client can connect to api.twilio.com with
-        /// a new SSL certificate posted at api.twilio.com:8443
+        /// Test if your environment is impacted by a TLS or certificate change 
+        /// by sending an HTTP request to the test endpoint tls-test.twilio.com:443
         /// </summary>
         public static void ValidateSslCertificate()
         {