diff --git a/fs/accounting/accounting.go b/fs/accounting/accounting.go
index 4d3c2af4a..7fa21a292 100644
--- a/fs/accounting/accounting.go
+++ b/fs/accounting/accounting.go
@@ -8,6 +8,8 @@ import (
 	"time"
 	"unicode/utf8"
 
+	"github.com/ncw/rclone/fs/rc"
+
 	"github.com/ncw/rclone/fs"
 	"github.com/ncw/rclone/fs/asyncreader"
 	"github.com/ncw/rclone/fs/fserrors"
@@ -318,8 +320,8 @@ func (acc *Account) String() string {
 }
 
 // RemoteStats produces stats for this file
-func (acc *Account) RemoteStats() (out map[string]interface{}) {
-	out = make(map[string]interface{})
+func (acc *Account) RemoteStats() (out rc.Params) {
+	out = make(rc.Params)
 	a, b := acc.progress()
 	out["bytes"] = a
 	out["size"] = b
diff --git a/fs/accounting/stats.go b/fs/accounting/stats.go
index a3747e7b9..9f4f07aad 100644
--- a/fs/accounting/stats.go
+++ b/fs/accounting/stats.go
@@ -76,24 +76,39 @@ func (s *StatsInfo) RemoteStats() (out rc.Params, err error) {
 		out["checking"] = c
 	}
 	if !s.transferring.empty() {
-		var t []interface{}
 		s.transferring.mu.RLock()
-		defer s.transferring.mu.RUnlock()
+
+		var t []rc.Params
 		for name := range s.transferring.items {
 			if acc := s.inProgress.get(name); acc != nil {
 				t = append(t, acc.RemoteStats())
 			} else {
-				t = append(t, name)
+				t = append(t, s.transferRemoteStats(name))
 			}
 		}
 		out["transferring"] = t
+		s.transferring.mu.RUnlock()
 	}
 	if s.errors > 0 {
-		out["lastError"] = s.lastError
+		out["lastError"] = s.lastError.Error()
 	}
 	return out, nil
 }
 
+func (s *StatsInfo) transferRemoteStats(name string) rc.Params {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	for _, tr := range s.startedTransfers {
+		if tr.remote == name {
+			return rc.Params{
+				"name": name,
+				"size": tr.size,
+			}
+		}
+	}
+	return rc.Params{"name": name}
+}
+
 type timeRange struct {
 	start time.Time
 	end   time.Time