diff --git a/kernel/sys.c b/kernel/sys.c
index 7b9f2e9c8e3ab2e1c9ecec69d419c7b2bc4b17cb..48a2b7901bdb61ef266d1f22733d6a72f8ce010a 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1919,7 +1919,7 @@ static int validate_prctl_map(struct prctl_mm_map *prctl_map)
 	((unsigned long)prctl_map->__m1 __op				\
 	 (unsigned long)prctl_map->__m2) ? 0 : -EINVAL
 	error  = __prctl_check_order(start_code, <, end_code);
-	error |= __prctl_check_order(start_data, <, end_data);
+	error |= __prctl_check_order(start_data,<=, end_data);
 	error |= __prctl_check_order(start_brk, <=, brk);
 	error |= __prctl_check_order(arg_start, <=, arg_end);
 	error |= __prctl_check_order(env_start, <=, env_end);