diff --git a/server/api/controller/collection.js b/server/api/controller/collection.js
index 50030d1a..d04564e2 100644
--- a/server/api/controller/collection.js
+++ b/server/api/controller/collection.js
@@ -2,13 +2,13 @@ const { Collection, Filter, Event, Tag, Place } = require('../models/models')
 
 const log = require('../../log')
 const { DateTime } = require('luxon')
-const { col: Col } = require('../../helpers')
+const { col: Col, queryParamToBool } = require('../../helpers')
 const { Op, Sequelize } = require('sequelize')
 
 const collectionController = {
 
   async getAll (req, res) {
-    const withFilters = req.query.withFilters
+    const withFilters = queryParamToBool(req.query.withFilters)
     let collections
     if (withFilters) {
       collections = await Collection.findAll({ include: [ Filter ] })
diff --git a/server/helpers.js b/server/helpers.js
index 7af98bbc..77598eca 100644
--- a/server/helpers.js
+++ b/server/helpers.js
@@ -295,8 +295,9 @@ module.exports = {
     }
   },
 
-  queryParamToBool (value) {
-    return ((value+'').toLowerCase() === 'true')
+  queryParamToBool (value, defaultValue) {
+    if (typeof value === 'undefined') return defaultValue
+    return (String(value).toLowerCase() === 'true')
   }
 
 }