diff --git a/BasiliskII/src/Unix/clip_unix.cpp b/BasiliskII/src/Unix/clip_unix.cpp
index 3b0ca500..85bf6d08 100644
--- a/BasiliskII/src/Unix/clip_unix.cpp
+++ b/BasiliskII/src/Unix/clip_unix.cpp
@@ -296,7 +296,8 @@ void ClipInit(void)
 void ClipExit(void)
 {
 	// Close window
-	XDestroyWindow(x_display, clip_win);
+	if (clip_win)
+		XDestroyWindow(x_display, clip_win);
 }