diff --git a/include/uapi/linux/android/binder.h b/include/uapi/linux/android/binder.h
index ec84ad106568..9d7b05055726 100644
--- a/include/uapi/linux/android/binder.h
+++ b/include/uapi/linux/android/binder.h
@@ -27,6 +27,7 @@
 #define B_PACK_CHARS(c1, c2, c3, c4) \
 	((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
 #define B_TYPE_LARGE 0x85
+#define BINDER_IPC_32BIT 1
 
 enum {
 	BINDER_TYPE_BINDER	= B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE),