diff --git a/tests/net/socket.cpp b/tests/net/socket.cpp
index e77ff20aba..7929b5ae34 100644
--- a/tests/net/socket.cpp
+++ b/tests/net/socket.cpp
@@ -99,7 +99,7 @@ wxSocketClientPtr SocketTestCase::GetHTTPSocket(int flags) const
         "Host: " + gs_serverHost + "\r\n"
         "\r\n";
 
-    sock->Write(httpGetRoot, httpGetRoot.length());
+    sock->Write(httpGetRoot.ToAscii(), httpGetRoot.length());
 
     ptr.reset(sock);
     return ptr;