diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 872899c..c675cbd 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -43,8 +43,8 @@
 /**
  * \def MBEDTLS_DELAYED_SERVER_CERT_VERIFICATION
  *
- * Enable the delayed verification of server 
- * certificates on the client side. 
+ * Enable the delayed verification of server
+ * certificates on the client side.
  *
  */
 #define MBEDTLS_DELAYED_SERVER_CERT_VERIFICATION
@@ -1612,7 +1612,7 @@
  * but not afterwards.
  *
  */
-#define MBEDTLS_SSL_FREE_SERVER_CERTIFICATE
+//#define MBEDTLS_SSL_FREE_SERVER_CERTIFICATE
 
 
 /**
@@ -1622,7 +1622,7 @@
  *
  * Requires: MBEDTLS_SSL_PROTO_DTLS
  */
-#define MBEDTLS_IMMEDIATE_TRANSMISSION
+//#define MBEDTLS_IMMEDIATE_TRANSMISSION
 
 /**
  * \def MBEDTLS_EARLY_KEY_COMPUTATION
@@ -1630,9 +1630,9 @@
  * Create ephemeral Diffie-Hellman key pair after
  * the ClientHello has been successfully transmitted.
  *
- * Requires: 
+ * Requires:
  */
-#define MBEDTLS_EARLY_KEY_COMPUTATION
+//#define MBEDTLS_EARLY_KEY_COMPUTATION
 
 /**
  * \def MBEDTLS_SSL_HW_RECORD_ACCEL