diff --git a/test/babashka/interop_test.clj b/test/babashka/interop_test.clj
index 94d03aae..fa7cab3e 100644
--- a/test/babashka/interop_test.clj
+++ b/test/babashka/interop_test.clj
@@ -247,4 +247,8 @@
   (is (= 3 (bb nil "(import '(java.util.concurrent Executors ExecutorService))
                     (let [fut (.submit ^ExecutorService (Executors/newCachedThreadPool)
                        ^Callable (fn [] 3))]
-   (.get fut))"))))
+                      (.get fut))")))
+  (is (nil? (bb nil "(import '(java.util.concurrent Executors ExecutorService))
+                     (let [fut (.submit ^ExecutorService (Executors/newCachedThreadPool)
+                       ^Runnable (fn [] 3))]
+                       (.get fut))"))))