diff --git a/Kernel/Net/NetworkTask.cpp b/Kernel/Net/NetworkTask.cpp
index 1d7d4c52213..33abe43f054 100644
--- a/Kernel/Net/NetworkTask.cpp
+++ b/Kernel/Net/NetworkTask.cpp
@@ -603,6 +603,7 @@ void handle_tcp(IPv4Packet const& ipv4_packet, UnixDateTime const& packet_timest
         }
     case TCPSocket::State::FinWait2:
         switch (tcp_packet.flags()) {
+        case TCPFlags::FIN | TCPFlags::ACK: // Fallthrough
         case TCPFlags::FIN:
             socket->set_ack_number(tcp_packet.sequence_number() + payload_size + 1);
             socket->set_state(TCPSocket::State::TimeWait);
@@ -612,6 +613,18 @@ void handle_tcp(IPv4Packet const& ipv4_packet, UnixDateTime const& packet_timest
             // FIXME: Verify that this transition is legitimate.
             socket->set_state(TCPSocket::State::Closed);
             return;
+        case TCPFlags::ACK:
+            socket->set_duplicate_acks(0);
+            if (payload_size) {
+                if (socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), { &ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size() }, packet_timestamp)) {
+                    socket->set_ack_number(tcp_packet.sequence_number() + payload_size);
+                    dbgln_if(TCP_DEBUG, "Got packet with ack_no={}, seq_no={}, payload_size={}, acking it with new ack_no={}, seq_no={}",
+                        tcp_packet.ack_number(), tcp_packet.sequence_number(), payload_size, socket->ack_number(), socket->sequence_number());
+                    send_delayed_tcp_ack(*socket);
+                }
+            }
+            return;
+
         default:
             dbgln("handle_tcp: unexpected flags in FinWait2 state ({:x})", tcp_packet.flags());
             (void)socket->send_tcp_packet(TCPFlags::RST);