1 files changed, 1 insertions, 1 deletions

diff --git a/check b/check
index b449f2b..c86a848 100755
--- a/check
+++ b/check
@@ -2,4 +2,4 @@
 
 set -eu
 
-yarn -s yarns.webapp/yarn.sh yarns.webapp/*.yarn --env PYTHONPATH="$PYTHONPATH" "$@"
+yarn -s yarns.webapp/yarn.sh yarns.webapp/*.yarn --env PYTHONPATH="${PYTHONPATH:=''}" "$@"