diff --git a/migrations/20210213_add_has_data_field.go b/migrations/20210213_add_has_data_field.go
new file mode 100644
index 0000000..7a83bb2
--- /dev/null
+++ b/migrations/20210213_add_has_data_field.go
@@ -0,0 +1,20 @@
+package migrations
+
+import (
+	"github.com/muety/wakapi/config"
+	"gorm.io/gorm"
+)
+
+func init() {
+	f := migrationFunc{
+		name: "20210213_add_has_data_field",
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			if err := db.Exec("UPDATE users SET has_data = TRUE WHERE 1").Error; err != nil {
+				return err
+			}
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}
diff --git a/static/assets/app.js b/static/assets/app.js
index e62e147..fa0f48c 100644
--- a/static/assets/app.js
+++ b/static/assets/app.js
@@ -50,16 +50,9 @@ String.prototype.toHHMMSS = function () {
 }
 
 String.prototype.toHHMM = function () {
-    var sec_num = parseInt(this, 10)
-    var hours = Math.floor(sec_num / 3600)
-    var minutes = Math.floor((sec_num - (hours * 3600)) / 60)
-
-    if (hours < 10 && hours > 0) {
-        hours = '0' + hours
-    }
-    if (minutes < 10 && minutes > 0) {
-        minutes = '0' + minutes
-    }
+    const sec_num = parseInt(this, 10)
+    const hours = Math.floor(sec_num / 3600)
+    const minutes = Math.floor((sec_num - (hours * 3600)) / 60)
     return hours + ':' + minutes
 }