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-rw-r--r--src/event/ngx_event_openssl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index bbeb5f0c5..a95eec05d 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1426,7 +1426,7 @@ ngx_ssl_ecdh_curve(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *name)
SSL_CTX_set_options(ssl->ctx, SSL_OP_SINGLE_ECDH_USE);
-#if SSL_CTRL_SET_ECDH_AUTO
+#ifdef SSL_CTRL_SET_ECDH_AUTO
/* not needed in OpenSSL 1.1.0+ */
SSL_CTX_set_ecdh_auto(ssl->ctx, 1);
#endif