diff --git a/README.md b/README.md
index 4da8501..a87308d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Mail Client Arduino Library for ESP32 v 1.2.1
+# Mail Client Arduino Library for ESP32 v 1.2.2
 
 This library allows ESP32 to send Email with/without attachment and receive Email with/without attachment download via SMTP and IMAP servers. 
 
diff --git a/library.properties b/library.properties
index d57fb94..b2cb9f4 100644
--- a/library.properties
+++ b/library.properties
@@ -1,6 +1,6 @@
 name=ESP32 Mail Client
 
-version=1.2.1
+version=1.2.2
 
 author=Mobizt
 
diff --git a/src/ESP32_MailClient.cpp b/src/ESP32_MailClient.cpp
index 5b9f315..6ad1f85 100644
--- a/src/ESP32_MailClient.cpp
+++ b/src/ESP32_MailClient.cpp
@@ -1,7 +1,7 @@
 /*
- *Mail Client Arduino Library for ESP32, version 1.2.1
+ *Mail Client Arduino Library for ESP32, version 1.2.2
  * 
- * August 7, 2019
+ * August 9, 2019
  * 
  * This library allows ESP32 to send Email with/without attachment and receive Email with/without attachment download through SMTP and IMAP servers. 
  * 
@@ -1009,6 +1009,7 @@ bool ESP32_MailClient::sendMail(HTTPClientESP32Ex &http, SMTPData &smtpData)
 
   http.setDebugCallback(NULL);
 
+
   WiFiClient *client;
 
   if (smtpData._sendCallback)
diff --git a/src/ESP32_MailClient.h b/src/ESP32_MailClient.h
index 266368f..0d3c345 100644
--- a/src/ESP32_MailClient.h
+++ b/src/ESP32_MailClient.h
@@ -1,7 +1,7 @@
 /*
- *Mail Client Arduino Library for ESP32, version 1.2.1
+ *Mail Client Arduino Library for ESP32, version 1.2.2
  * 
- * August 7, 2019
+ * August 9, 2019
  * 
  * This library allows ESP32 to send Email with/without attachment and receive Email with/without attachment download through SMTP and IMAP servers.
  * 
diff --git a/src/HTTPClientESP32Ex.cpp b/src/HTTPClientESP32Ex.cpp
index c2634f1..72356f6 100644
--- a/src/HTTPClientESP32Ex.cpp
+++ b/src/HTTPClientESP32Ex.cpp
@@ -2,7 +2,7 @@
  * Customized version of ESP32 HTTPClient Library. 
  * Allow custom header and payload with STARTTLS support
  * 
- * v 1.1.1
+ * v 1.1.2
  * 
  * The MIT License (MIT)
  * Copyright (c) 2019 K. Suwatchai (Mobizt)
diff --git a/src/HTTPClientESP32Ex.h b/src/HTTPClientESP32Ex.h
index 61b50c2..451d25f 100644
--- a/src/HTTPClientESP32Ex.h
+++ b/src/HTTPClientESP32Ex.h
@@ -2,7 +2,7 @@
  * Customized version of ESP32 HTTPClient Library. 
  * Allow custom header and payload with STARTTLS support
  * 
- * v 1.1.1
+ * v 1.1.2
  * 
  * The MIT License (MIT)
  * Copyright (c) 2019 K. Suwatchai (Mobizt)
diff --git a/src/ssl_client32.cpp b/src/ssl_client32.cpp
index 846ff20..87d94a0 100644
--- a/src/ssl_client32.cpp
+++ b/src/ssl_client32.cpp
@@ -1,5 +1,5 @@
 /*
- *Customized ssl_client.cpp to support STARTTLS protocol, version 1.0.1
+ *Customized ssl_client.cpp to support STARTTLS protocol, version 1.0.2
  * 
  * The MIT License (MIT)
  * Copyright (c) 2019 K. Suwatchai (Mobizt)
@@ -498,7 +498,7 @@ int data_to_read(sslclient_context32 *ssl_client)
 
 int send_ssl_data(sslclient_context32 *ssl_client, const uint8_t *data, uint16_t len)
 {
-   
+
     log_v("Writing HTTP request..."); //for low level debug
     int ret = -1;
 
@@ -517,7 +517,7 @@ int send_ssl_data(sslclient_context32 *ssl_client, const uint8_t *data, uint16_t
 
 int get_ssl_receive(sslclient_context32 *ssl_client, uint8_t *data, int length)
 {
-   
+
     //log_d( "Reading HTTP response...");   //for low level debug
     int ret = -1;
 
@@ -785,7 +785,8 @@ int starttlsHandshake(sslclient_context32 *ssl_client, int port)
 
     memset(hMsg, 0, msgLen);
     strcpy_P(hMsg, FPSTR("STARTTLS\r\n"));
-    ssl_client->_debugCallback(FPSTR("INFO: send STARTTLS protocol command"));
+    if (ssl_client->_debugCallback)
+        ssl_client->_debugCallback(FPSTR("INFO: send STARTTLS protocol command"));
     ret = lwip_write(ssl_client->socket, hMsg, strlen(hMsg));
 
     if (ret < 0)
diff --git a/src/ssl_client32.h b/src/ssl_client32.h
index 218fdc9..4e7255b 100644
--- a/src/ssl_client32.h
+++ b/src/ssl_client32.h
@@ -1,5 +1,5 @@
 /*
- *Customized ssl_client.h to support STARTTLS protocol, version 1.0.1
+ *Customized ssl_client.h to support STARTTLS protocol, version 1.0.2
  * 
  * The MIT License (MIT)
  * Copyright (c) 2019 K. Suwatchai (Mobizt)