use ARRAY_SIZE instead of sizeof(array) / sizeof(array[0])

1 files changed, 1 insertions, 1 deletions

diff --git a/at76_usb.h b/at76_usb.h
index df0a529..8398f26 100644
--- a/at76_usb.h
+++ b/at76_usb.h
@@ -762,7 +762,7 @@ static const long channel_frequency[] = {
         2412, 2417, 2422, 2427, 2432, 2437, 2442,
         2447, 2452, 2457, 2462, 2467, 2472, 2484
 };
-#define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
+#define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
 
 /* the supported rates of this hardware, bit7 marks a basic rate */
 static const u8 hw_rates[4] = {0x82,0x84,0x0b,0x16};