diff --git a/src/network/network_server.cpp b/src/network/network_server.cpp
--- a/src/network/network_server.cpp
+++ b/src/network/network_server.cpp
@@ -1141,7 +1141,7 @@ NetworkRecvStatus ServerNetworkGameSocke
 	/* The client is trying to catch up with the server */
 	if (this->status == STATUS_PRE_ACTIVE) {
 		/* The client is not yet caught up? */
-		if (frame + DAY_TICKS < _frame_counter) return NETWORK_RECV_STATUS_OKAY;
+		if (frame + Ticks::DAY_TICKS < _frame_counter) return NETWORK_RECV_STATUS_OKAY;
 
 		/* Now it is! Unpause the game */
 		this->status = STATUS_ACTIVE;
@@ -1724,7 +1724,7 @@ void NetworkServer_Tick(bool send_frame)
 				 * did not receive a packet, then the client is not just
 				 * slow, but the connection is likely severed. Mentioning
 				 * frame_freq is not useful in this case. */
-				if (lag > (uint)DAY_TICKS && cs->lag_test == 0 && cs->last_packet + std::chrono::seconds(2) > std::chrono::steady_clock::now()) {
+				if (lag > (uint)Ticks::DAY_TICKS && cs->lag_test == 0 && cs->last_packet + std::chrono::seconds(2) > std::chrono::steady_clock::now()) {
 					IConsolePrint(CC_WARNING, "[{}] Client #{} is slow, try increasing [network.]frame_freq to a higher value!", _frame_counter, cs->client_id);
 					cs->lag_test = 1;
 				}