diff --git a/lib/libefi/include/sys/uuid.h b/lib/libefi/include/sys/uuid.h
index 9ce872e345..eab4622a6d 100644
--- a/lib/libefi/include/sys/uuid.h
+++ b/lib/libefi/include/sys/uuid.h
@@ -74,12 +74,8 @@ struct uuid {
 	uint8_t		node_addr[6];
 };
 
-#define	UUID_LEN	16
-
 #define	UUID_PRINTABLE_STRING_LENGTH 37
 
-typedef uchar_t		uuid_t[UUID_LEN];
-
 /*
  * Convert a uuid to/from little-endian format
  */