diff --git a/SQCSim2021/connector.cpp b/SQCSim2021/connector.cpp
index c9e6a27..d3f8f10 100644
--- a/SQCSim2021/connector.cpp
+++ b/SQCSim2021/connector.cpp
@@ -59,10 +59,10 @@ int Connector::Connect(const char* srv_addr, std::string name) {
 
 #ifdef _WIN32
 	u_long flag = 1;
-#else
-	uint64_t** flag = nullptr;
-#endif
 	if (ioctl(m_sock_tcp, SOCK_NONBLOCK, &flag) < 0) {
+#else
+	if (ioctl(m_sock_tcp, SOCK_NONBLOCK, NULL) < 0) {
+#endif
 		std::cout << "Impossible de mettre le socket en mode non-bloquant." << std::endl;
 		return 3;
 	}