diff --git a/zig-x11/window.c b/zig-x11/window.c
index 80110c46d86c3451a51b11b7b1e065ecd1181063..fb7a9e7638bf8ddb25d7c637160434d7799d64d8 100644
--- a/zig-x11/window.c
+++ b/zig-x11/window.c
@@ -1,3 +1,5 @@
+// This is here just for reference. It is not required for this example.
+
 #include <X11/Xlib.h>
 #include <unistd.h>