diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 44d28a2..02e527c 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -659,9 +659,7 @@
 union mbedtls_ssl_premaster_secret {
     unsigned char dummy; /* Make the union non-empty even with SSL disabled */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED)    || \
-    defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)  || \
-    defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED)     || \
-    defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
+    defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
     unsigned char _pms_ecdh[MBEDTLS_ECP_MAX_BYTES];    /* RFC 4492 5.10 */
 #endif
 #if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)