diff --git a/db.go b/db.go
index f407a39..16a34d6 100644
--- a/db.go
+++ b/db.go
@@ -3,7 +3,6 @@ package main
 import (
 	"errors"
 	"fmt"
-	"log"
 	"strconv"
 	"time"
 
@@ -91,8 +90,20 @@ func (db db) lastTS(user, q string) time.Time {
 }
 
 func (d duration) MarshalYAML() (interface{}, error) {
-	log.Println("marshalling duration", time.Duration(d))
-	return time.Duration(d).String(), nil
+	return d.String(), nil
+}
+
+func (d duration) String() string {
+	result := ""
+	if weeks := time.Duration(d) / (time.Hour * 24 * 7); weeks > 0 {
+		result += fmt.Sprintf("%dw", weeks)
+		d -= duration(weeks * time.Hour * 24 * 7)
+	}
+	if days := time.Duration(d) / (time.Hour * 24); days > 0 {
+		result += fmt.Sprintf("%dd", days)
+		d -= duration(days * time.Hour * 24)
+	}
+	return result + time.Duration(d).String()
 }
 
 func (d *duration) UnmarshalYAML(unmarshal func(interface{}) error) error {