diff --git a/lustre/tests/conf-sanity.sh b/lustre/tests/conf-sanity.sh
index 181395c55a9c7e3c62459e1d45be67ba403cea4e..4d8ce6d133bc03969c134f2d51b9493bf8bca3da 100644
--- a/lustre/tests/conf-sanity.sh
+++ b/lustre/tests/conf-sanity.sh
@@ -634,7 +634,7 @@ run_test 15 "zconf-mount without /sbin/mount.lustre (should return error)"
 
 # LOGS/PENDING do not exist anymore since CMD3
 test_16() {
-        TMPMTPT="${MOUNT%/*}/conf16"
+        TMPMTPT="${TMP}/conf16"
 
         if [ ! -e "$MDSDEV" ]; then
             log "no $MDSDEV existing, so mount Lustre to create one"