diff --git a/tests/native_tests/language.hy b/tests/native_tests/language.hy
index 04669fa..4213a2c 100644
--- a/tests/native_tests/language.hy
+++ b/tests/native_tests/language.hy
@@ -23,7 +23,12 @@
   (def count 0)
   (for [x [1 2 3 4 5]]
     (def count (+ count x)))
-  (assert (= count 15)))
+  (assert (= count 15))
+  (def count 0)
+  (for [x [1 2 3 4 5]
+        y [1 2 3 4 5]]
+    (def count (+ count x y)))
+  (assert (= count 140)))
 
 
 (defn test-in []