diff --git a/qutebrowser/javascript/.eslintignore b/qutebrowser/javascript/.eslintignore
new file mode 100644
index 000000000..ca4d3c667
--- /dev/null
+++ b/qutebrowser/javascript/.eslintignore
@@ -0,0 +1,2 @@
+# Upstream Mozilla's code
+pac_utils.js
diff --git a/tox.ini b/tox.ini
index 22e584667..a25effb05 100644
--- a/tox.ini
+++ b/tox.ini
@@ -183,4 +183,5 @@ commands =
 [testenv:eslint]
 deps =
 whitelist_externals = eslint
-commands = eslint --color qutebrowser/javascript
+changedir = {toxinidir}/qutebrowser/javascript
+commands = eslint --color .