diff --git a/lib/cpp/test/TNonblockingSSLServerTest.cpp b/lib/cpp/test/TNonblockingSSLServerTest.cpp
index d0d8688..dc40c12 100644
--- a/lib/cpp/test/TNonblockingSSLServerTest.cpp
+++ b/lib/cpp/test/TNonblockingSSLServerTest.cpp
@@ -151,7 +151,7 @@
     std::shared_ptr<transport::TNonblockingSSLServerSocket> socket;
     Mutex mutex_;
 
-    Runner() {
+    Runner():port(0) {
       listenHandler.reset(new ListenEventHandler(&mutex_));
     }