diff --git a/meta.go b/meta.go
index 003cf587..842cb9f5 100644
--- a/meta.go
+++ b/meta.go
@@ -213,7 +213,9 @@ func (m *Message) Length() (max int) {
 func (m *Message) Tables(cbs ...func(value Maps)) *Message {
 	return m.Table(func(index int, value Maps, head []string) {
 		for _, cb := range cbs {
-			cb(value)
+			if cb != nil {
+				cb(value)
+			}
 		}
 	})
 }
diff --git a/misc/git/total.go b/misc/git/total.go
index 44333021..de628e30 100644
--- a/misc/git/total.go
+++ b/misc/git/total.go
@@ -56,6 +56,7 @@ func init() {
 					return
 				}
 				msg := m.Cmd("_sum", value[nfs.PATH], mdb.TOTAL, "10000")
+				// msg := m.Cmd("_sum", value[nfs.PATH], mdb.TOTAL, "2022-01-01")
 
 				defer lock.Lock()()
 				msg.Tables(func(value ice.Maps) {