diff --git a/src/Nazara/Network/Win32/SocketImpl.cpp b/src/Nazara/Network/Win32/SocketImpl.cpp
index 8d408cd20..37c435c9e 100644
--- a/src/Nazara/Network/Win32/SocketImpl.cpp
+++ b/src/Nazara/Network/Win32/SocketImpl.cpp
@@ -539,7 +539,7 @@ namespace Nz
 		keepAlive.keepalivetime = static_cast<ULONG>(msTime);
 
 		DWORD dummy; //< byteReturned
-		if (!WSAIoctl(handle, SIO_KEEPALIVE_VALS, &keepAlive, sizeof(keepAlive), nullptr, 0, &dummy, nullptr, nullptr))
+		if (WSAIoctl(handle, SIO_KEEPALIVE_VALS, &keepAlive, sizeof(keepAlive), nullptr, 0, &dummy, nullptr, nullptr) == SOCKET_ERROR)
 		{
 			if (error)
 				*error = TranslateWSAErrorToSocketError(WSAGetLastError());