diff --git a/scripts/runtox.sh b/scripts/runtox.sh
index 77aab28ae3..59567f8643 100755
--- a/scripts/runtox.sh
+++ b/scripts/runtox.sh
@@ -27,4 +27,4 @@ if [ -z "${ENV}" ]; then
     exit 0
 fi
 
-exec $TOXPATH -p auto -o -e "$ENV" -- "${@:2}"
+exec $TOXPATH -o -e "$ENV" -- "${@:2}"