diff --git a/programs/ssl/mini_client.c b/programs/ssl/mini_client.c
index 4b8140e..b4346bb 100644
--- a/programs/ssl/mini_client.c
+++ b/programs/ssl/mini_client.c
@@ -88,7 +88,7 @@
 
 const char *pers = "mini_client";
 
-#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 const unsigned char psk[] = {
     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
@@ -211,7 +211,7 @@
 
     mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
 
-#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
+#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
     mbedtls_ssl_conf_psk( &conf, psk, sizeof( psk ),
                 (const unsigned char *) psk_id, sizeof( psk_id ) - 1 );
 #endif