diff --git a/gui/griffon-app/lifecycle/Initialize.groovy b/gui/griffon-app/lifecycle/Initialize.groovy
index cf872e8f..deaecf3c 100644
--- a/gui/griffon-app/lifecycle/Initialize.groovy
+++ b/gui/griffon-app/lifecycle/Initialize.groovy
@@ -49,6 +49,8 @@ class Initialize extends AbstractLifecycleHandler {
             }
         }
         
+        System.setProperty("apple.eawt.quitStrategy", "CLOSE_ALL_WINDOWS");
+        
         if (SystemTray.isSupported() && (SystemVersion.isMac() || SystemVersion.isWindows())) {
             try {
                 def tray = SystemTray.getSystemTray()