diff --git a/xarray/tests/test_plot.py b/xarray/tests/test_plot.py
index cba03bd8361..bdd0fec777f 100644
--- a/xarray/tests/test_plot.py
+++ b/xarray/tests/test_plot.py
@@ -1036,10 +1036,6 @@ def test_no_args(self):
         for ax in self.g.axes.flat:
             self.assertTrue(ax.has_data())
 
-            # default font size should be small
-            fontsize = ax.title.get_size()
-            self.assertLessEqual(fontsize, 12)
-
     @pytest.mark.slow
     def test_names_appear_somewhere(self):
         self.darray.name = 'testvar'