diff --git a/src/BootImg.zig b/src/BootImg.zig
index ecba78a..81e3556 100644
--- a/src/BootImg.zig
+++ b/src/BootImg.zig
@@ -1,9 +1,9 @@
-var BOOT_MAGIC = "ANDROID!";
-var BOOT_MAGIC_SIZE = 8;
-var BOOT_NAME_SIZE = 16;
-var BOOT_ARGS_SIZE = 512;
+export var BOOT_MAGIC = "ANDROID!";
+export var BOOT_MAGIC_SIZE = 8;
+export var BOOT_NAME_SIZE = 16;
+export var BOOT_ARGS_SIZE = 512;
 
-struct BootImageHeader {
+export struct BootImageHeader {
   u8[BOOT_MAGIC_SIZE] magic;
   u32 kernel_size;    // size in bytes
   u32 kernel_addr;    // physical load address