diff -r 57ed3981db20 -r b9437746bffb QTfrontend/util/MessageDialog.cpp
--- a/QTfrontend/util/MessageDialog.cpp	Thu Apr 25 21:32:22 2019 +0300
+++ b/QTfrontend/util/MessageDialog.cpp	Thu Apr 25 21:24:27 2019 +0200
@@ -66,6 +66,7 @@
     msgMsg.setWindowTitle(title != NULL ? title : "Hedgewars");
     msgMsg.setText(msg);
     msgMsg.setIcon(icon);
+    msgMsg.setTextFormat(Qt::PlainText);
     msgMsg.setWindowModality(Qt::WindowModal);
 
     return msgMsg.exec();