go.mod    |  2 +-
 reader.go | 12 ++++++++----

diff --git a/go.mod b/go.mod
index 1d36cf6339d0d0777dc9e11aa1c81371c3eb133f..2924eeeb43ebe8fff9d5b1f1f7d2a14af6125c63 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ 	github.com/alexflint/go-arg v1.1.0
 	github.com/anacrolix/dht/v2 v2.0.1
 	github.com/anacrolix/envpprof v1.0.0
 	github.com/anacrolix/go-libutp v1.0.2
-	github.com/anacrolix/log v0.2.2-0.20190821103111-726085c46ea1
+	github.com/anacrolix/log v0.2.2-0.20190821105323-e3efcaf1a0fd
 	github.com/anacrolix/missinggo v1.2.1
 	github.com/anacrolix/missinggo/perf v1.0.0
 	github.com/anacrolix/mmsg v1.0.0 // indirect
diff --git a/reader.go b/reader.go
index 24403dc17f75f06a0b588c403c0337323820fb4c..cb612f9f07c08534b09482de306357c962db5f67 100644
--- a/reader.go
+++ b/reader.go
@@ -4,9 +4,9 @@ import (
 	"context"
 	"errors"
 	"io"
-	"log"
 	"sync"
 
+	"github.com/anacrolix/log"
 	"github.com/anacrolix/missinggo"
 )
 
@@ -224,10 +224,10 @@ 		}
 		r.t.cl.lock()
 		// TODO: Just reset pieces in the readahead window. This might help
 		// prevent thrashing with small caches and file and piece priorities.
-		log.Printf("error reading torrent %s piece %d offset %d, %d bytes: %v",
-			r.t.infoHash.HexString(), pi, po, len(b1), err)
+		r.log(log.Fstr("error reading torrent %s piece %d offset %d, %d bytes: %v",
+			r.t.infoHash.HexString(), pi, po, len(b1), err))
 		if !r.t.updatePieceCompletion(pi) {
-			log.Printf("piece %d completion unchanged", pi)
+			r.log(log.Fstr("piece %d completion unchanged", pi))
 		}
 		r.t.cl.unlock()
 	}
@@ -272,3 +272,7 @@
 	r.posChanged()
 	return
 }
+
+func (r *reader) log(m log.Msg) {
+	r.t.logger.Log(m)
+}