1 files changed, 1 insertions, 1 deletions

diff --git a/lib-src/rcs2log b/lib-src/rcs2log
index bc7875cfdd2..2a72404d9e5 100755
--- a/lib-src/rcs2log
+++ b/lib-src/rcs2log
@@ -209,7 +209,7 @@ month_data='
 if type mktemp >/dev/null 2>&1; then
         logdir=`mktemp -d`
 else
-        logdir=$TMPDIR/rcs2log$$
+        logdir="${TMPDIR-/tmp}/rcs2log$$"
         (umask 077 && mkdir "$logdir")
 fi || exit
 case $logdir in