--- a/config.tests/unix/openssl11/openssl.cpp	2017-11-05 16:07:40.963385070 -0500
+++ b/config.tests/unix/openssl11/openssl.cpp	2017-11-05 16:07:51.755255545 -0500
@@ -39,7 +39,7 @@
 
 #include <openssl/opensslv.h>
 
-#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
 
--- a/src/network/ssl/qsslsocket_openssl_symbols_p.h	2017-11-06 00:02:18.919611226 -0500
+++ b/src/network/ssl/qsslsocket_openssl_symbols_p.h	2017-11-06 00:09:46.879756111 -0500
@@ -232,7 +232,7 @@
 int q_BIO_read(BIO *a, void *b, int c);
 Q_AUTOTEST_EXPORT int q_BIO_write(BIO *a, const void *b, int c);
 int q_BN_num_bits(const BIGNUM *a);
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if QT_CONFIG(opensslv11)
 int q_BN_is_word(BIGNUM *a, BN_ULONG w);
 #else
 // BN_is_word is implemented purely as a
@@ -245,7 +245,7 @@
 //
 // Users are required to include <openssl/bn.h>.
 #define q_BN_is_word BN_is_word
-#endif // OPENSSL_VERSION_NUMBER >= 0x10100000L
+#endif // QT_CONFIG
 BN_ULONG q_BN_mod_word(const BIGNUM *a, BN_ULONG w);
 #ifndef OPENSSL_NO_EC
 const EC_GROUP* q_EC_KEY_get0_group(const EC_KEY* k);
--- a/src/network/ssl/qsslsocket_openssl_symbols.cpp	2017-11-06 00:04:58.843877923 -0500
+++ b/src/network/ssl/qsslsocket_openssl_symbols.cpp	2017-11-06 00:06:12.985074360 -0500
@@ -1017,7 +1017,7 @@
     RESOLVEFUNC(EC_GROUP_get_degree)
 #endif
     RESOLVEFUNC(BN_num_bits)
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+#if QT_CONFIG(opensslv11)
     RESOLVEFUNC(BN_is_word)
 #endif
     RESOLVEFUNC(BN_mod_word)