1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 26448f176803..51bb2a3cf8b3 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -813,7 +813,7 @@ static int mxser_init(void)
 
         /* start finding PCI board here */
 #ifdef CONFIG_PCI
-        n = (sizeof(mxser_pcibrds) / sizeof(mxser_pcibrds[0])) - 1;
+        n = ARRAY_SIZE(mxser_pcibrds) - 1;
         index = 0;
         b = 0;
         while (b < n) {