diff --git a/NetSSL_OpenSSL/testsuite/ping/websocket-client.cpp b/NetSSL_OpenSSL/testsuite/ping/websocket-client.cpp
index 7d1268570..543a619c4 100644
--- a/NetSSL_OpenSSL/testsuite/ping/websocket-client.cpp
+++ b/NetSSL_OpenSSL/testsuite/ping/websocket-client.cpp
@@ -14,6 +14,8 @@
 #include "Poco/Net/HTTPSClientSession.h"
 #include "Poco/Util/Application.h"
 
+#include <iostream>
+
 using Poco::Net::HTTPSClientSession;
 using Poco::Net::HTTPRequest;
 using Poco::Net::HTTPResponse;
diff --git a/NetSSL_OpenSSL/testsuite/ping/websocket-server.cpp b/NetSSL_OpenSSL/testsuite/ping/websocket-server.cpp
index e5b22031a..5606cd272 100644
--- a/NetSSL_OpenSSL/testsuite/ping/websocket-server.cpp
+++ b/NetSSL_OpenSSL/testsuite/ping/websocket-server.cpp
@@ -21,6 +21,8 @@
 #include "Poco/Thread.h"
 #include "Poco/Util/Application.h"
 
+#include <iostream>
+
 using Poco::Net::HTTPResponse;
 using Poco::Net::HTTPServerRequest;
 using Poco::Net::HTTPServerResponse;