diff --git a/src/sled/futures/future_test.cc b/src/sled/futures/future_test.cc
index 41d9880..3dea345 100644
--- a/src/sled/futures/future_test.cc
+++ b/src/sled/futures/future_test.cc
@@ -125,6 +125,7 @@ TEST_SUITE("future")
             throw std::runtime_error("test");
             return 1;
         });
+        f2.Wait();
         CHECK_FALSE(f2.IsFailed());
         CHECK_EQ(std::string("test"), f2.FailureReason().what());
         CHECK(f2.IsFailed());