diff --git a/cf/roken-frag.m4 b/cf/roken-frag.m4
index ee2ffdf1d..58b283ed0 100644
--- a/cf/roken-frag.m4
+++ b/cf/roken-frag.m4
@@ -156,6 +156,7 @@ AM_CONDITIONAL(have_glob_h, test "$ac_cv_func_glob_working" = yes)
 AC_CHECK_FUNCS([				\
 	asnprintf				\
 	asprintf				\
+	atexit					\
 	cgetent					\
 	getconfattr				\
 	getprogname				\
@@ -163,6 +164,7 @@ AC_CHECK_FUNCS([				\
 	getspnam				\
 	initstate				\
 	issetugid				\
+	on_exit					\
 	random					\
 	setprogname				\
 	setstate				\