diff --git a/src/main.cpp b/src/main.cpp
index b5437dbf2..6969d3389 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -119,10 +119,6 @@ void KMailApplication::delayedInstanceCreation(const QStringList &args, const QS
 
 int main(int argc, char *argv[])
 {
-#if defined(Q_OS_UNIX) && QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
-    // enforce xcb plugin fix bug Bug 367598
-    qputenv("QT_QPA_PLATFORM", "xcb");
-#endif
     QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     KMailApplication app(argc, &argv);