diff --git a/concat_test.go b/concat_test.go
index 8a06c13..11d6e20 100644
--- a/concat_test.go
+++ b/concat_test.go
@@ -126,14 +126,20 @@ func (s concatFinalStore) ConcatUploads(id string, uploads []string) error {
 }
 
 func TestConcatFinal(t *testing.T) {
+	a := assert.New(t)
+
 	handler, _ := NewHandler(Config{
 		MaxSize:  400,
 		BasePath: "files",
 		DataStore: concatFinalStore{
-			t: assert.New(t),
+			t: a,
 		},
+		NotifyCompleteUploads: true,
 	})
 
+	c := make(chan FileInfo, 1)
+	handler.CompleteUploads = c
+
 	(&httpTest{
 		Name:   "Successful POST request",
 		Method: "POST",
@@ -144,6 +150,14 @@ func TestConcatFinal(t *testing.T) {
 		Code: http.StatusCreated,
 	}).Run(handler, t)
 
+	info := <-c
+	a.Equal("foo", info.ID)
+	a.Equal(int64(10), info.Size)
+	a.Equal(int64(10), info.Offset)
+	a.False(info.IsPartial)
+	a.True(info.IsFinal)
+	a.Equal([]string{"a", "b"}, info.PartialUploads)
+
 	(&httpTest{
 		Name:   "Successful HEAD request",
 		Method: "HEAD",
diff --git a/unrouted_handler.go b/unrouted_handler.go
index da60c55..3303a8a 100644
--- a/unrouted_handler.go
+++ b/unrouted_handler.go
@@ -238,6 +238,7 @@ func (handler *UnroutedHandler) PostFile(w http.ResponseWriter, r *http.Request)
 			handler.sendError(w, r, err)
 			return
 		}
+		info.Offset = size
 
 		if handler.config.NotifyCompleteUploads {
 			info.ID = id