@@ -519,7 +519,7 @@ def include(fmto, plotters):
                         preset[pm][fmto.key] = fmto.value
         if fname is not None:
             fname = self._resolve_preset_path(fname, False)
-            os.makedirs(osp.dirname(fname))
+            os.makedirs(osp.dirname(fname), exist_ok=True)
             with open(fname, 'w') as f:
                 yaml.dump(preset, f)
         else:
 
@@ -45,6 +45,7 @@ def project():
                                           'test.yml')),
                     ("test.yml", "test.yml")])
 def test_load_preset(project, preset, path):
+    os.makedirs(osp.dirname(path), exist_ok=True)
     with open(path, 'w') as f:
         yaml.dump({"fmt1": "test", "fmt2": "this should be ignored"}, f)
     try: