diff -r 8a6a2d931bae -r d52f5d8e75e6 qmlfrontend/net_session.cpp
--- a/qmlfrontend/net_session.cpp	Sat Nov 12 15:40:20 2022 +0100
+++ b/qmlfrontend/net_session.cpp	Sat Nov 12 21:12:14 2022 +0100
@@ -340,7 +340,7 @@
   QString hash =
       QCryptographicHash::hash(m_clientSalt.toLatin1()
                                    .append(m_serverSalt.toLatin1())
-                                   .append(m_passwordHash)
+                                   .append(m_passwordHash.toLatin1())
                                    .append(QByteArray::number(cProtocolVersion))
                                    .append("!hedgewars"),
                                QCryptographicHash::Sha1)
@@ -349,7 +349,7 @@
   m_serverHash =
       QCryptographicHash::hash(m_serverSalt.toLatin1()
                                    .append(m_clientSalt.toLatin1())
-                                   .append(m_passwordHash)
+                                   .append(m_passwordHash.toLatin1())
                                    .append(QByteArray::number(cProtocolVersion))
                                    .append("!hedgewars"),
                                QCryptographicHash::Sha1)