diff --git a/mtl/test_eval.py b/mtl/test_eval.py
new file mode 100644
index 0000000..d6a80c3
--- /dev/null
+++ b/mtl/test_eval.py
@@ -0,0 +1,13 @@
+import mtl
+
+
+def test_eval_regression_smoke1():
+    """From issue #215"""
+    d2 = {
+        'a': [
+            (0, True), (1, True), (3, True), (4, True), (5, False), (6, True)
+        ],
+        'b': [(0, False), (3, True)],
+    }
+    f2 = mtl.parse('(a U[0,3] b)')
+    f2(d2, quantitative=False)