diff --git a/board/trab/trab_fkt.c b/board/trab/trab_fkt.c
index 93b9490..53cdb5a 100644
--- a/board/trab/trab_fkt.c
+++ b/board/trab/trab_fkt.c
@@ -294,6 +294,12 @@
 	return 1;
 }
 
+void hang (void)
+{
+	puts ("### ERROR ### Please RESET the board ###\n");
+	for (;;);
+}
+
 int do_info (void)
 {
 	printf ("Stand-alone application for TRAB board function test\n");