diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 72aadd058..613a86327 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1376,7 +1376,7 @@ ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file)
     if (SSL_CTX_set0_tmp_dh_pkey(ssl->ctx, dh) != 1) {
         ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
                       "SSL_CTX_set0_tmp_dh_pkey(\"%s\") failed", file->data);
-#if (OPENSSL_VERSION_NUMBER >= 0x3000001fL)
+#if (OPENSSL_VERSION_NUMBER >= 0x30000010L)
         EVP_PKEY_free(dh);
 #endif
         BIO_free(bio);
diff --git a/src/event/ngx_event_openssl.h b/src/event/ngx_event_openssl.h
index 3664d37b1..fe5107fb6 100644
--- a/src/event/ngx_event_openssl.h
+++ b/src/event/ngx_event_openssl.h
@@ -96,7 +96,7 @@
 #endif
 
 
-#if (OPENSSL_VERSION_NUMBER < 0x3000000fL)
+#if (OPENSSL_VERSION_NUMBER < 0x30000000L)
 #define SSL_group_to_name(s, nid)    NULL
 #endif