diff --git a/src/main/java/de/com/baseband/clientboot/CBWindow.java b/src/main/java/de/com/baseband/clientboot/CBWindow.java
index a652596..a9d897d 100644
--- a/src/main/java/de/com/baseband/clientboot/CBWindow.java
+++ b/src/main/java/de/com/baseband/clientboot/CBWindow.java
@@ -38,6 +38,7 @@ public class CBWindow extends JFrame implements WindowListener {
     public void waitForClose() {
         setVisible(true);
         while(poll());
+        setVisible(false);
     }
 
     public boolean poll() {