diff --git a/libc/kernel/uapi/linux/android/binder.h b/libc/kernel/uapi/linux/android/binder.h
index 1abb3a3..6e64ebc 100644
--- a/libc/kernel/uapi/linux/android/binder.h
+++ b/libc/kernel/uapi/linux/android/binder.h
@@ -120,20 +120,22 @@
   __u32 command;
   __s32 param;
 };
-#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read)
-#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, __s64)
-#define BINDER_SET_MAX_THREADS _IOW('b', 5, __u32)
-#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, __s32)
-#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, __s32)
-#define BINDER_THREAD_EXIT _IOW('b', 8, __s32)
-#define BINDER_VERSION _IOWR('b', 9, struct binder_version)
-#define BINDER_GET_NODE_DEBUG_INFO _IOWR('b', 11, struct binder_node_debug_info)
-#define BINDER_GET_NODE_INFO_FOR_REF _IOWR('b', 12, struct binder_node_info_for_ref)
-#define BINDER_SET_CONTEXT_MGR_EXT _IOW('b', 13, struct flat_binder_object)
-#define BINDER_FREEZE _IOW('b', 14, struct binder_freeze_info)
-#define BINDER_GET_FROZEN_INFO _IOWR('b', 15, struct binder_frozen_status_info)
-#define BINDER_ENABLE_ONEWAY_SPAM_DETECTION _IOW('b', 16, __u32)
-#define BINDER_GET_EXTENDED_ERROR _IOWR('b', 17, struct binder_extended_error)
+enum {
+  BINDER_WRITE_READ = _IOWR('b', 1, struct binder_write_read),
+  BINDER_SET_IDLE_TIMEOUT = _IOW('b', 3, __s64),
+  BINDER_SET_MAX_THREADS = _IOW('b', 5, __u32),
+  BINDER_SET_IDLE_PRIORITY = _IOW('b', 6, __s32),
+  BINDER_SET_CONTEXT_MGR = _IOW('b', 7, __s32),
+  BINDER_THREAD_EXIT = _IOW('b', 8, __s32),
+  BINDER_VERSION = _IOWR('b', 9, struct binder_version),
+  BINDER_GET_NODE_DEBUG_INFO = _IOWR('b', 11, struct binder_node_debug_info),
+  BINDER_GET_NODE_INFO_FOR_REF = _IOWR('b', 12, struct binder_node_info_for_ref),
+  BINDER_SET_CONTEXT_MGR_EXT = _IOW('b', 13, struct flat_binder_object),
+  BINDER_FREEZE = _IOW('b', 14, struct binder_freeze_info),
+  BINDER_GET_FROZEN_INFO = _IOWR('b', 15, struct binder_frozen_status_info),
+  BINDER_ENABLE_ONEWAY_SPAM_DETECTION = _IOW('b', 16, __u32),
+  BINDER_GET_EXTENDED_ERROR = _IOWR('b', 17, struct binder_extended_error),
+};
 enum transaction_flags {
   TF_ONE_WAY = 0x01,
   TF_ROOT_OBJECT = 0x04,