diff --git a/udelay.c b/udelay.c
index 1bab27d..2026d3e 100644
--- a/udelay.c
+++ b/udelay.c
@@ -56,5 +56,5 @@
 	micro = count / timeusec;
 
 	printf_debug("%ldM loops per second. ", (unsigned long)micro);
-	printf("OK\n");
+	printf("ok\n");
 }