diff --git a/test/grammar-cover/run-and-email.sh b/test/grammar-cover/run-and-email.sh
index dcf797d2..cc1eb0eb 100755
--- a/test/grammar-cover/run-and-email.sh
+++ b/test/grammar-cover/run-and-email.sh
@@ -2,6 +2,7 @@
 USER=${USER:-rocky}
 EMAIL=${EMAIL:-rb@dustyfeet.com}
 SUBJECT_PREFIX="grammar cover testing for"
+LOGFILE=/tmp/grammar-cover-$$.log
 /bin/bash ./grammar-all.sh  >$LOGFILE 2>&1
 rc=$?
 if ((rc == 0)); then
@@ -10,4 +11,3 @@ else
     tail -v $LOGFILE | mail -s "$SUBJECT_PREFIX not ok" ${USER}@localhost
     tail -v $LOGFILE | mail -s "$SUBJECT_PREFIX not ok" $EMAIL
 fi
-done