diff --git a/libtransmission/peer-io.cc b/libtransmission/peer-io.cc
index 1577119fd..74df46f1c 100644
--- a/libtransmission/peer-io.cc
+++ b/libtransmission/peer-io.cc
@@ -729,13 +729,10 @@ void tr_peerIo::utp_init([[maybe_unused]] struct_utp_context* ctx)
                 io->set_enabled(TR_DOWN, true);
                 io->can_read_wrapper();
 
-                // utp_read_drained() notifies libutp that this read buffer is empty.
+                // utp_read_drained() notifies libutp that we read a packet from them.
                 // It opens up the congestion window by sending an ACK (soonish) if
                 // one was not going to be sent.
-                if (std::empty(io->inbuf_))
-                {
-                    utp_read_drained(args->socket);
-                }
+                utp_read_drained(args->socket);
             }
             return {};
         });