diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 75d437cc4a..697beb7a0f 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-16	Sebastian Huber <sebastian.huber@embedded-brains.de>
+
+	* score/include/rtems/seterr.h: Include <errno.h>.
+
 2010-07-16	Sebastian Huber <sebastian.huber@embedded-brains.de>
 
 	* libcsupport/include/rtems/libio.h: Changed
diff --git a/cpukit/score/include/rtems/seterr.h b/cpukit/score/include/rtems/seterr.h
index 2548258d87..9eb4295554 100644
--- a/cpukit/score/include/rtems/seterr.h
+++ b/cpukit/score/include/rtems/seterr.h
@@ -19,6 +19,8 @@
 #ifndef _RTEMS_SETERR_H
 #define _RTEMS_SETERR_H
 
+#include <errno.h>
+
 /**
  *  This is a helper macro which will set the variable errno and return
  *  -1 to the caller.  This pattern is common to many POSIX methods.