diff --git a/lib_sh/time.c b/lib_sh/time.c
index 52dbcd0..9a8f89a 100644
--- a/lib_sh/time.c
+++ b/lib_sh/time.c
@@ -105,7 +105,7 @@
 	return 0 - readl(TCNT0);
 }
 
-void udelay (unsigned long usec)
+void __udelay (unsigned long usec)
 {
 	unsigned long long tmp;
 	ulong tmo;