diff --git a/configure.in b/configure.in
index 561a8829..8f18aea5 100644
--- a/configure.in
+++ b/configure.in
@@ -43,7 +43,7 @@ changequote([,])dnl
 fi
 AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
 
-AC_CHECK_FUNCS(getdtablesize psignal \
+AC_CHECK_FUNCS(getdtablesize psignal mktemp \
 	       dup2 getcwd sigsetmask getgroups setlinebuf \
 	       seteuid setegid setreuid setregid strerror)
 AC_CHECK_SYMBOL(sys_siglist)