diff --git a/qutebrowser/utils/javascript.py b/qutebrowser/utils/javascript.py
index 93df8e70f..21b373dd1 100644
--- a/qutebrowser/utils/javascript.py
+++ b/qutebrowser/utils/javascript.py
@@ -59,6 +59,8 @@ def _convert_js_arg(arg):
         return str(arg).lower()
     elif isinstance(arg, (int, float)):
         return str(arg)
+    elif isinstance(arg, list):
+        return '[{}]'.format(', '.join(_convert_js_arg(e) for e in arg))
     else:
         raise TypeError("Don't know how to handle {!r} of type {}!".format(
             arg, type(arg).__name__))
diff --git a/tests/unit/utils/test_javascript.py b/tests/unit/utils/test_javascript.py
index 29e090fd0..0a196cfa1 100644
--- a/tests/unit/utils/test_javascript.py
+++ b/tests/unit/utils/test_javascript.py
@@ -84,6 +84,7 @@ class TestStringEscape:
     (None, 'undefined'),
     (object(), TypeError),
     (True, 'true'),
+    ([23, True, 'x'], '[23, true, "x"]'),
 ])
 def test_convert_js_arg(arg, expected):
     if expected is TypeError: