diff --git a/drivers/net/irda/donauboe.c b/drivers/net/irda/donauboe.c
index 3e5eca1..a82d8f9 100644
--- a/drivers/net/irda/donauboe.c
+++ b/drivers/net/irda/donauboe.c
@@ -840,7 +840,7 @@
 
   /* test 1: SIR filter and back to back */
 
-  for (j = 0; j < (sizeof (bauds) / sizeof (int)); ++j)
+  for (j = 0; j < ARRAY_SIZE(bauds); ++j)
     {
       int fir = (j > 1);
       toshoboe_stopchip (self);