diff --git a/cf/roken-frag.m4 b/cf/roken-frag.m4
index bd679b0be..ae6d802d3 100644
--- a/cf/roken-frag.m4
+++ b/cf/roken-frag.m4
@@ -86,6 +86,7 @@ AC_CHECK_HEADERS([\
 	unistd.h				\
 	userconf.h				\
 	usersec.h				\
+	util.h					\
 	winsock.h				\
 ])
 	
@@ -225,6 +226,11 @@ AC_NEED_PROTO([
 vasnprintf)dnl
 fi
 
+AC_FIND_FUNC_NO_LIBS(pidfile,util,
+[#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif],0)
+
 AC_BROKEN([					\
 	chown					\
 	copyhostent				\