diff --git a/wpa_supplicant-2.9_standard/src/utils/common.h b/wpa_supplicant-2.9_standard/src/utils/common.h
index b8de27443e4f5bc484227b7bdd152c30ae86b935..a455b3d19a016a68cd1f42cec0570941b2126c79 100644
--- a/wpa_supplicant-2.9_standard/src/utils/common.h
+++ b/wpa_supplicant-2.9_standard/src/utils/common.h
@@ -606,9 +606,7 @@ void int_array_sort_unique(int *a);
 void int_array_add_unique(int **res, int a);
 bool int_array_includes(int *arr, int val);
 
-#ifndef ARRAY_SIZE
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
-#endif
 
 void str_clear_free(char *str);
 void bin_clear_free(void *bin, size_t len);