diff --git a/xarray/plot/facetgrid.py b/xarray/plot/facetgrid.py
index ce94d69b98c..d2016e30679 100644
--- a/xarray/plot/facetgrid.py
+++ b/xarray/plot/facetgrid.py
@@ -295,8 +295,8 @@ def map_dataarray_line(self, x=None, y=None, hue=None, **kwargs):
                 self._mappables.append(mappable)
 
         _, _, hueplt, xlabel, ylabel, huelabel = _infer_line_data(
-                darray=self.data.loc[self.name_dicts.flat[0]],
-                x=x, y=y, hue=hue)
+            darray=self.data.loc[self.name_dicts.flat[0]],
+            x=x, y=y, hue=hue)
 
         self._hue_var = hueplt
         self._hue_label = huelabel
diff --git a/xarray/tests/test_plot.py b/xarray/tests/test_plot.py
index 07ee65645da..b34880f3e6b 100644
--- a/xarray/tests/test_plot.py
+++ b/xarray/tests/test_plot.py
@@ -1625,9 +1625,9 @@ def test_wrong_num_of_dimensions(self):
 class TestScatterPlots(PlotTestCase):
     def setUp(self):
         das = [DataArray(np.random.randn(3, 3, 4, 4),
-                          dims=['x', 'row', 'col', 'hue'],
-                          coords=[range(k) for k in [3, 3, 4, 4]])
-                for _ in [1, 2]]
+                         dims=['x', 'row', 'col', 'hue'],
+                         coords=[range(k) for k in [3, 3, 4, 4]])
+               for _ in [1, 2]]
         ds = Dataset({'A': das[0], 'B': das[1]})
         ds.hue.name = 'huename'
         ds.hue.attrs['units'] = 'hunits'