diff --git a/examples/automotive/ButtonBar.h b/examples/automotive/ButtonBar.h
index 9bfc34ae..310f385c 100644
--- a/examples/automotive/ButtonBar.h
+++ b/examples/automotive/ButtonBar.h
@@ -1,5 +1,5 @@
-#ifndef BUTTON_BAR
-#define BUTTON_BAR
+#ifndef BUTTON_BAR_H
+#define BUTTON_BAR_H
 
 #include <QskLinearBox.h>