diff --git a/test/test_api/test_unicode.py b/test/test_api/test_unicode.py
index ede5757d..c74cb686 100644
--- a/test/test_api/test_unicode.py
+++ b/test/test_api/test_unicode.py
@@ -65,10 +65,10 @@ def test_complete_at_zero(Script):
     assert len(s) > 0
 
 
-def test_wrong_encoding(Script, cwd_tmpdir):
-    x = cwd_tmpdir.join('x.py')
+def test_wrong_encoding(Script, tmpdir):
+    x = tmpdir.join('x.py')
     # Use both latin-1 and utf-8 (a really broken file).
     x.write_binary(u'foobar = 1\nä'.encode('latin-1') + u'ä'.encode('utf-8'))
 
-    c, = Script('import x; x.foo', sys_path=['.']).completions()
+    c, = Script('import x; x.foo', sys_path=[tmpdir.strpath]).completions()
     assert c.name == 'foobar'