diff --git a/src/network/ssl/qsslcontext_openssl.cpp b/src/network/ssl/qsslcontext_openssl.cpp
index 41b759364b..17ce5b4b30 100644
--- qtbase/src/network/ssl/qsslcontext_openssl.cpp
+++ qtbase/src/network/ssl/qsslcontext_openssl.cpp
@@ -248,7 +248,7 @@ void QSslContext::applyBackendConfig(QSslContext *sslContext)
     if (sslContext->sslConfiguration.backendConfiguration().isEmpty())
         return;
 
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
     if (QSslSocket::sslLibraryVersionNumber() >= 0x10002000L) {
         QSharedPointer<SSL_CONF_CTX> cctx(q_SSL_CONF_CTX_new(), &q_SSL_CONF_CTX_free);
         if (cctx) {

diff --git a/src/network/ssl/qsslsocket_openssl_symbols.cpp b/src/network/ssl/qsslsocket_openssl_symbols.cpp
index 82ff5e9e3a..77e5d03b7d 100644
--- qtbase/src/network/ssl/qsslsocket_openssl_symbols.cpp
+++ qtbase/src/network/ssl/qsslsocket_openssl_symbols.cpp
@@ -402,7 +402,7 @@ DEFINEFUNC2(int, SSL_CTX_use_PrivateKey, SSL_CTX *a, a, EVP_PKEY *b, b, return -
 DEFINEFUNC2(int, SSL_CTX_use_RSAPrivateKey, SSL_CTX *a, a, RSA *b, b, return -1, return)
 DEFINEFUNC3(int, SSL_CTX_use_PrivateKey_file, SSL_CTX *a, a, const char *b, b, int c, c, return -1, return)
 DEFINEFUNC(X509_STORE *, SSL_CTX_get_cert_store, const SSL_CTX *a, a, return nullptr, return)
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
 DEFINEFUNC(SSL_CONF_CTX *, SSL_CONF_CTX_new, DUMMYARG, DUMMYARG, return nullptr, return);
 DEFINEFUNC(void, SSL_CONF_CTX_free, SSL_CONF_CTX *a, a, return ,return);
 DEFINEFUNC2(void, SSL_CONF_CTX_set_ssl_ctx, SSL_CONF_CTX *a, a, SSL_CTX *b, b, return, return);
diff --git a/src/network/ssl/qsslsocket_openssl_symbols_p.h b/src/network/ssl/qsslsocket_openssl_symbols_p.h
index 4fb8f26cf6..3a7de93113 100644
--- qtbase/src/network/ssl/qsslsocket_openssl_symbols_p.h
+++ qtbase/src/network/ssl/qsslsocket_openssl_symbols_p.h
@@ -352,7 +352,7 @@ int q_SSL_CTX_use_PrivateKey(SSL_CTX *a, EVP_PKEY *b);
 int q_SSL_CTX_use_RSAPrivateKey(SSL_CTX *a, RSA *b);
 int q_SSL_CTX_use_PrivateKey_file(SSL_CTX *a, const char *b, int c);
 X509_STORE *q_SSL_CTX_get_cert_store(const SSL_CTX *a);
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
 SSL_CONF_CTX *q_SSL_CONF_CTX_new();
 void q_SSL_CONF_CTX_free(SSL_CONF_CTX *a);
 void q_SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *a, SSL_CTX *b);
--- qtbase/src/network/configure.json	2019-01-28 18:11:52.000000000 +0100
+++ -	2019-03-11 00:31:42.883264246 +0100
@@ -165,7 +165,7 @@
             "test": {
                 "include": "openssl/opensslv.h",
                 "tail": [
-                    "#if !defined(OPENSSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER-0 < 0x10100000L",
+                    "#if !defined(OPENSSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER-0 < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)",
                     "#  error OpenSSL >= 1.1 is required",
                     "#endif"
                 ]