diff --git a/kernel/range.c b/kernel/range.c
index 74e2e6114927e7efa1c88bc098c74934f765f8de..471b66acabb57e770dd552bfc5a9edae356acfd7 100644
--- a/kernel/range.c
+++ b/kernel/range.c
@@ -7,10 +7,6 @@
 
 #include <linux/range.h>
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#endif
-
 int add_range(struct range *range, int az, int nr_range, u64 start, u64 end)
 {
 	if (start >= end)