diff -Naur qt-everywhere-opensource-src-4.8.7.orig/src/network/ssl/qsslsocket_openssl.cpp qt-everywhere-opensource-src-4.8.7/src/network/ssl/qsslsocket_openssl.cpp
--- qt-everywhere-opensource-src-4.8.7.orig/src/network/ssl/qsslsocket_openssl.cpp	2019-11-01 13:09:27.574442989 +0300
+++ qt-everywhere-opensource-src-4.8.7/src/network/ssl/qsslsocket_openssl.cpp	2019-11-01 13:12:45.649917739 +0300
@@ -273,7 +273,11 @@
 #endif
         break;
     case QSsl::SslV3:
+#ifndef OPENSSL_NO_SSL3
         ctx = q_SSL_CTX_new(client ? q_SSLv3_client_method() : q_SSLv3_server_method());
+#else
+        ctx = 0; // SSL 3 not supported by the system, but chosen deliberately -> error
+#endif
         break;
     case QSsl::SecureProtocols: // SslV2 will be disabled below
     case QSsl::TlsV1SslV3: // SslV2 will be disabled below
diff -Naur qt-everywhere-opensource-src-4.8.7.orig/src/network/ssl/qsslsocket_openssl_symbols.cpp qt-everywhere-opensource-src-4.8.7/src/network/ssl/qsslsocket_openssl_symbols.cpp
--- qt-everywhere-opensource-src-4.8.7.orig/src/network/ssl/qsslsocket_openssl_symbols.cpp	2019-11-01 13:09:27.574442989 +0300
+++ qt-everywhere-opensource-src-4.8.7/src/network/ssl/qsslsocket_openssl_symbols.cpp	2019-11-01 13:16:20.249765859 +0300
@@ -253,7 +253,9 @@
 #ifndef OPENSSL_NO_SSL2
 DEFINEFUNC(const SSL_METHOD *, SSLv2_client_method, DUMMYARG, DUMMYARG, return 0, return)
 #endif
+#ifndef OPENSSL_NO_SSL3
 DEFINEFUNC(const SSL_METHOD *, SSLv3_client_method, DUMMYARG, DUMMYARG, return 0, return)
+#endif
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 DEFINEFUNC(const SSL_METHOD *, SSLv23_client_method, DUMMYARG, DUMMYARG, return 0, return)
 #else
@@ -263,7 +265,9 @@
 #ifndef OPENSSL_NO_SSL2
 DEFINEFUNC(const SSL_METHOD *, SSLv2_server_method, DUMMYARG, DUMMYARG, return 0, return)
 #endif
+#ifndef OPENSSL_NO_SSL3
 DEFINEFUNC(const SSL_METHOD *, SSLv3_server_method, DUMMYARG, DUMMYARG, return 0, return)
+#endif
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 DEFINEFUNC(const SSL_METHOD *, SSLv23_server_method, DUMMYARG, DUMMYARG, return 0, return)
 #else
@@ -927,7 +931,9 @@
 #ifndef OPENSSL_NO_SSL2
     RESOLVEFUNC(SSLv2_client_method)
 #endif
+#ifndef OPENSSL_NO_SSL3
     RESOLVEFUNC(SSLv3_client_method)
+#endif
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
     RESOLVEFUNC(SSLv23_client_method)
 #else
@@ -937,7 +943,9 @@
 #ifndef OPENSSL_NO_SSL2
     RESOLVEFUNC(SSLv2_server_method)
 #endif
+#ifndef OPENSSL_NO_SSL3
     RESOLVEFUNC(SSLv3_server_method)
+#endif
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
     RESOLVEFUNC(SSLv23_server_method)
 #else