diff --git a/src/network/network_client.cpp b/src/network/network_client.cpp
index 5fab9a655d..2912874560 100644
--- a/src/network/network_client.cpp
+++ b/src/network/network_client.cpp
@@ -1120,6 +1120,7 @@ NetworkRecvStatus ClientNetworkGameSocketHandler::Receive_SERVER_COMPANY_UPDATE(
 {
 	if (this->status < STATUS_ACTIVE) return NETWORK_RECV_STATUS_MALFORMED_PACKET;
 
+	static_assert(sizeof(_network_company_passworded) <= sizeof(uint16));
 	_network_company_passworded = p->Recv_uint16();
 	SetWindowClassesDirty(WC_COMPANY);
 
diff --git a/src/network/network_server.cpp b/src/network/network_server.cpp
index e40b973ea5..3a61cab445 100644
--- a/src/network/network_server.cpp
+++ b/src/network/network_server.cpp
@@ -775,6 +775,7 @@ NetworkRecvStatus ServerNetworkGameSocketHandler::SendCompanyUpdate()
 {
 	Packet *p = new Packet(PACKET_SERVER_COMPANY_UPDATE);
 
+	static_assert(sizeof(_network_company_passworded) <= sizeof(uint16));
 	p->Send_uint16(_network_company_passworded);
 	this->SendPacket(p);
 	return NETWORK_RECV_STATUS_OKAY;