diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 78102f0..f6ea78c 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -871,7 +871,7 @@
  *
  * Uncomment this macro to enable support for ALPN.
  */
-#define POLARSSL_SSL_ALPN
+//#define POLARSSL_SSL_ALPN
 
 /**
  * \def POLARSSL_SSL_SESSION_TICKETS