diff --git a/lib/matplotlib/tests/test_subplots.py b/lib/matplotlib/tests/test_subplots.py
index 5af1716821bc..d588f7b4b13b 100644
--- a/lib/matplotlib/tests/test_subplots.py
+++ b/lib/matplotlib/tests/test_subplots.py
@@ -113,8 +113,7 @@ def test_exceptions():
                                 message='.*sharex\ argument\ to\ subplots',
                                 category=UserWarning)
         assert_raises(ValueError, plt.subplots, 2, 2, -1)
-        # uncomment this for 1.5
-        # assert_raises(ValueError, plt.subplots, 2, 2, 0)
+        assert_raises(ValueError, plt.subplots, 2, 2, 0)
         assert_raises(ValueError, plt.subplots, 2, 2, 5)