diff --git a/src/include/stdlib.h b/src/include/stdlib.h
index 6200f1c590..d6e7fafb25 100644
--- a/src/include/stdlib.h
+++ b/src/include/stdlib.h
@@ -16,22 +16,6 @@ static inline unsigned long div_round_up(unsigned int n, unsigned int d)
 {
 	return (n + d - 1) / d;
 }
-
-/*
- * Divide positive or negative dividend by positive divisor and round
- * to closest integer. Result is undefined for negative divisors and
- * for negative dividends if the divisor variable type is unsigned.
- */
-#define DIV_ROUND_CLOSEST(x, divisor)(			\
-{							\
-	typeof(x) __x = x;				\
-	typeof(divisor) __d = divisor;			\
-	(((typeof(x))-1) > 0 ||				\
-	 ((typeof(divisor))-1) > 0 || (__x) > 0) ?	\
-		(((__x) + ((__d) / 2)) / (__d)) :	\
-		(((__x) - ((__d) / 2)) / (__d));	\
-}							\
-)
 #endif