diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 8ded7fc6b5..ed1a7b3fc2 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-07	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* libcsupport/src/sup_fs_is_separator.c:
+	Include <rtems/libio_.h> (Missing protypes).
+
 2011-12-07	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* rtems/src/workspace.c:
diff --git a/cpukit/libcsupport/src/sup_fs_is_separator.c b/cpukit/libcsupport/src/sup_fs_is_separator.c
index affd606271..2c695e0335 100644
--- a/cpukit/libcsupport/src/sup_fs_is_separator.c
+++ b/cpukit/libcsupport/src/sup_fs_is_separator.c
@@ -14,6 +14,7 @@
  *  $Id$
  */
 
+#include <rtems/libio_.h>
 
 /*
  *  rtems_filesystem_is_separator