Index: trunk/src_plugins/fp_fs/fp_fs.c
===================================================================
--- trunk/src_plugins/fp_fs/fp_fs.c	(revision 2523)
+++ trunk/src_plugins/fp_fs/fp_fs.c	(revision 2524)
@@ -26,6 +26,10 @@
 
 #include "config.h"
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #include <dirent.h>
 #ifdef HAVE_PWD_H
 #include <pwd.h>