diff --git a/overlay/bin/molecule b/overlay/bin/molecule
index 0f42c5d..8d77d26 100755
--- a/overlay/bin/molecule
+++ b/overlay/bin/molecule
@@ -23,7 +23,8 @@ if [ -n "${MOLECULE_CUSTOM_FILTERS_REPO}" ]; then
 fi
 
 if [ -n "${MOLECULE_ANSIBLE_VAULT_PASSWORD}" ]; then
-    echo "${MOLECULE_ANSIBLE_VAULT_PASSWORD}" > /root/.vaultpasswd
+    MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE=/root/.vaultpasswd
+    echo "${MOLECULE_ANSIBLE_VAULT_PASSWORD}" > $MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE
 fi
 
-exec env ANSIBLE_VAULT_PASSWORD_FILE="${MOLECULE_ANSIBLE_VAULT_PASSWORD}" /usr/local/bin/molecule "$@"
+exec env ANSIBLE_VAULT_PASSWORD_FILE=$MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE /usr/local/bin/molecule "$@"