Index: uspace/lib/c/include/uuid.h
===================================================================
--- uspace/lib/c/include/uuid.h	(revision 4805495a910f793f8918c13f029a38a5bb548154)
+++ uspace/lib/c/include/uuid.h	(revision bc73be3215c832cdb0c8a5022db800902f9f62dc)
@@ -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