diff --git a/src/kernel/qapplication_x11.cpp b/src/kernel/qapplication_x11.cpp
index 874afe06..0dbd6ce7 100644
--- a/src/kernel/qapplication_x11.cpp
+++ b/src/kernel/qapplication_x11.cpp
@@ -1646,7 +1646,8 @@ void tqt_init_internal( int *argcptr, char **argv,
     setlocale( LC_NUMERIC, "C" );	// make sprintf()/scanf() work
 
 #if defined(QT_THREAD_SUPPORT)
-    if ( tqt_is_gui_used ) {
+    if (( tqt_is_gui_used ) && ( !display )) {
+	// If TQt is running standalone with a GUI, initialize X11 threading
 	XInitThreads();
     }
 #endif