--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -56,6 +56,10 @@
         self._run("lucene_grammar")
 
     def test_range_check(self):
+        try:
+            import railroad
+        except ModuleNotFoundError:
+            self.skipTest("no diagram/railroad")
         self._run("range_check")
 
     def test_stackish(self):