diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 9cb61c3..3ae7408 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -1090,7 +1090,7 @@
 
     setup_requirements(reinterpret_cast<char*>(data), sz);
 
-    for (size_t i = 0; i < ARRAY_SIZE(images); i++) {
+    for (size_t i = 0; i < arraysize(images); i++) {
         fname = find_item(images[i].part_name, product);
         fastboot_buffer buf;
         if (!load_buf(transport, fname.c_str(), &buf)) {