diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 9c295e9..3d80565 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -676,7 +676,7 @@
     case SSL_CTRL_SET_TMP_ECDH: {
       /* For historical reasons, this API expects an |EC_KEY|, but only the
        * group is used. */
-      EC_KEY *ec_key = (EC_KEY *)parg;
+      const EC_KEY *ec_key = (const EC_KEY *)parg;
       if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
         OPENSSL_PUT_ERROR(SSL, ssl3_ctrl, ERR_R_PASSED_NULL_PARAMETER);
         return ret;
@@ -766,10 +766,6 @@
       return tls1_set_curves(&s->tlsext_ellipticcurvelist,
                              &s->tlsext_ellipticcurvelist_length, parg, larg);
 
-    case SSL_CTRL_SET_ECDH_AUTO:
-      s->cert->ecdh_tmp_auto = larg;
-      return 1;
-
     case SSL_CTRL_SET_SIGALGS:
       return tls1_set_sigalgs(s->cert, parg, larg, 0);
 
@@ -945,7 +941,7 @@
     case SSL_CTRL_SET_TMP_ECDH: {
       /* For historical reasons, this API expects an |EC_KEY|, but only the
        * group is used. */
-      EC_KEY *ec_key = (EC_KEY *)parg;
+      const EC_KEY *ec_key = (const EC_KEY *)parg;
       if (ec_key == NULL || EC_KEY_get0_group(ec_key) == NULL) {
         OPENSSL_PUT_ERROR(SSL, ssl3_ctx_ctrl, ERR_R_PASSED_NULL_PARAMETER);
         return 0;
@@ -993,10 +989,6 @@
       return tls1_set_curves(&ctx->tlsext_ellipticcurvelist,
                              &ctx->tlsext_ellipticcurvelist_length, parg, larg);
 
-    case SSL_CTRL_SET_ECDH_AUTO:
-      ctx->cert->ecdh_tmp_auto = larg;
-      return 1;
-
     case SSL_CTRL_SET_SIGALGS:
       return tls1_set_sigalgs(ctx->cert, parg, larg, 0);