diff --git a/cpukit/pppd/pppd.h b/cpukit/pppd/pppd.h
index 46e80f5585..ae6f6640f8 100644
--- a/cpukit/pppd/pppd.h
+++ b/cpukit/pppd/pppd.h
@@ -22,6 +22,7 @@
 #ifndef __PPPD_H__
 #define __PPPD_H__
 
+#include <stdbool.h>		/* bool */
 #include <stdio.h>		/* for FILE */
 #include <limits.h>		/* for NGROUPS_MAX */
 #include <sys/param.h>		/* for MAXPATHLEN and BSD4_4, if defined */
@@ -59,8 +60,6 @@
  * Option descriptor structure.
  */
 
-typedef unsigned char	bool;
-
 enum opt_type {
 	o_special_noarg = 0,
 	o_special = 1,