diff --git a/am29f040b.c b/am29f040b.c
index ceba046..3603bb9 100644
--- a/am29f040b.c
+++ b/am29f040b.c
@@ -78,7 +78,7 @@
 
 	myusec_delay(10);
     
-	printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
+	printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
 	if (id1 == flash->manufacture_id && id2 == flash->model_id)
 		return 1;