diff --git a/FlatCAMApp.py b/FlatCAMApp.py
index ae571e79..38d21e23 100644
--- a/FlatCAMApp.py
+++ b/FlatCAMApp.py
@@ -1830,7 +1830,7 @@ class App(QtCore.QObject):
         # signal for displaying messages in status bar
         self.inform.connect(self.info)
         # signal to be called when the app is quiting
-        self.app_quit.connect(self.quit_application)
+        self.app_quit.connect(self.quit_application, type=Qt.QueuedConnection)
         self.message.connect(self.message_dialog)
         self.progress.connect(self.set_progress_bar)
 
@@ -5138,8 +5138,12 @@ class App(QtCore.QObject):
             del stgs
 
         log.debug("App.final_save() --> App UI state saved.")
+
         QtWidgets.qApp.quit()
 
+        if sys.platform != 'win32':
+            sys.exit()
+
     def on_portable_checked(self, state):
         """
         Callback called when the checkbox in Preferences GUI is checked.
diff --git a/README.md b/README.md
index e14f189a..6dfffef9 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ CAD program, and create G-Code for Isolation routing.
 - changes in the Preferences UI for NCC and Paint Tool in Tool Dia entry field
 - fixed Tcl commands that use the overlap parameter to switch from fraction to percentage
 - in Transform Tool mae sure that the buffer sub-tool parameters are better explained in tooltips
+- attempt to make TclCommand quit_flatcam work under Linux
 
 29.12.2019