diff --git a/driver/bk1080.c b/driver/bk1080.c
index 7c9d6bb..5afdbb0 100644
--- a/driver/bk1080.c
+++ b/driver/bk1080.c
@@ -21,8 +21,6 @@
 #include "driver/system.h"
 #include "misc.h"
 
-#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
-
 static const uint16_t BK1080_RegisterTable[] = {
 	0x0008, 0x1080, 0x0201, 0x0000,
 	0x40C0, 0x0A1F, 0x002E, 0x02FF,
diff --git a/misc.h b/misc.h
index 8a7b590..2d040a6 100644
--- a/misc.h
+++ b/misc.h
@@ -20,6 +20,8 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#define ARRAY_SIZE(a)    (sizeof(a) / sizeof(a[0]))
+
 #define IS_MR_CHANNEL(x) ((x) >= MR_CHANNEL_FIRST && (x) <= MR_CHANNEL_LAST)
 #define IS_FREQ_CHANNEL(x) ((x) >= FREQ_CHANNEL_FIRST && (x) <= FREQ_CHANNEL_LAST)
 #define IS_NOAA_CHANNEL(x) ((x) >= NOAA_CHANNEL_FIRST && (x) <= NOAA_CHANNEL_LAST)