Index: uspace/lib/c/include/bool.h
===================================================================
--- uspace/lib/c/include/bool.h	(revision dec16a201da62c0794357ded365e573a55387037)
+++ uspace/lib/c/include/bool.h	(revision 7d42cc98a6c2040a964dff9d22829f2f1f5a859a)
@@ -36,8 +36,10 @@
 #define LIBC_BOOL_H_
 
-#define false 0
-#define true 1
+#include <libarch/types.h>
 
-typedef short bool;
+#define false  0
+#define true   1
+
+typedef uint8_t bool;
 
 #endif