Index: uspace/lib/c/include/uuid.h
===================================================================
--- uspace/lib/c/include/uuid.h	(revision 098e16a542a995bd6a49397ae5c774a6dc91a3d1)
+++ uspace/lib/c/include/uuid.h	(revision bc417660cbc159aeca9329f4da387c9038dc80bc)
@@ -38,4 +38,5 @@
 #include <stdint.h>
 #include <types/uuid.h>
+#include <stdbool.h>
 
 extern errno_t uuid_generate(uuid_t *);
@@ -43,5 +44,5 @@
 extern void uuid_decode(uint8_t *, uuid_t *);
 extern errno_t uuid_parse(const char *, uuid_t *, const char **);
-extern errno_t uuid_format(uuid_t *, char **);
+extern errno_t uuid_format(uuid_t *, char **, bool);
 
 #endif