diff --git a/libtransmission/peer-io.c b/libtransmission/peer-io.c
index fef573d06..32311562a 100644
--- a/libtransmission/peer-io.c
+++ b/libtransmission/peer-io.c
@@ -396,6 +396,7 @@ utp_on_write(void *closure, unsigned char *buf, size_t buflen)
     rc = evbuffer_remove( io->outbuf, buf, buflen );
     if( rc < (long)buflen ) {
         tr_nerr( "UTP", "Short write: %d < %ld", rc, (long)buflen);
+        UTP_Close( io->utp_socket );
     }
 }