diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
index b4ed7ae22d35..f44d36f8e9d4 100644
--- a/lib/matplotlib/axes/_axes.py
+++ b/lib/matplotlib/axes/_axes.py
@@ -1414,6 +1414,14 @@ def eventplot(self, positions, orientation='horizontal', lineoffsets=1,
         else:
             positions = [np.asanyarray(positions)]
 
+        if 'snap' not in kwargs:
+            _log.warning(
+                "eventplot: Snapping has been turned off. Snapping may still "
+                "be turned on manually, but runs the risk of 'missing' data "
+                "in the outputted graph.")
+            kwargs['snap'] = False
+            kwargs['antialiaseds'] = True
+
         poss = []
         for position in positions:
             poss += self._process_unit_info([("x", position)], kwargs)
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/eventplot.png b/lib/matplotlib/tests/baseline_images/test_axes/eventplot.png
index d8e6c077132e..026ec246b09c 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_axes/eventplot.png and b/lib/matplotlib/tests/baseline_images/test_axes/eventplot.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_defaults.png b/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_defaults.png
index 36ac132b43cc..11343f2038d8 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_defaults.png and b/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_defaults.png differ
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_problem_kwargs.png b/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_problem_kwargs.png
index 3b26157f9ae2..292130f87482 100644
Binary files a/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_problem_kwargs.png and b/lib/matplotlib/tests/baseline_images/test_axes/test_eventplot_problem_kwargs.png differ