diff --git a/mix/main.cpp b/mix/main.cpp
index d0a19cfb5..798520e39 100644
--- a/mix/main.cpp
+++ b/mix/main.cpp
@@ -36,6 +36,10 @@ int main(int _argc, char* _argv[])
 	//https://bugs.launchpad.net/ubuntu/+source/appmenu-qt5/+bug/1323853
 	putenv((char*)"QT_QPA_PLATFORMTHEME=");
 	putenv((char*)"QSG_RENDER_LOOP=threaded");
+#endif
+#if (defined(_WIN32) || defined(_WIN64))
+	if (!getenv("OPENSSL_CONF"))
+		putenv((char*)"OPENSSL_CONF=c:\\");
 #endif
 	try
 	{