diff --git a/library/src/wei/mark/standout/StandOutWindow.java b/library/src/wei/mark/standout/StandOutWindow.java
index 0505aff..1020f98 100644
--- a/library/src/wei/mark/standout/StandOutWindow.java
+++ b/library/src/wei/mark/standout/StandOutWindow.java
@@ -1097,6 +1097,12 @@ public final synchronized Window show(int id) {
 		// get the params corresponding to the id
 		StandOutLayoutParams params = window.getLayoutParams();
 
+		try {
+			// force remove the view from the window manager to prevent adding it again
+			mWindowManager.removeView(window);
+		} catch(IllegalArgumentException ex) {
+		}
+
 		try {
 			// add the view to the window manager
 			mWindowManager.addView(window, params);