diff --git a/dist/mobx-async-store.cjs.js b/dist/mobx-async-store.cjs.js
index 56b015ca..1592a433 100644
--- a/dist/mobx-async-store.cjs.js
+++ b/dist/mobx-async-store.cjs.js
@@ -47,6 +47,7 @@ function _wrapRegExp(re, groups) { _wrapRegExp = function _wrapRegExp(re, groups
 var pending = {};
 var counter = {};
 var URL_MAX_LENGTH = 1024;
+var ENCODED_COMMA = encodeURIComponent(',');
 
 var incrementor = function incrementor(key) {
   return function () {
@@ -286,26 +287,22 @@ function parseErrorPointer() {
 
 function deriveIdQueryStrings(ids) {
   var restOfUrl = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
-  var idLength = Math.max.apply(Math, _toConsumableArray(ids.map(function (id) {
-    return String(id).length;
-  })));
   var maxLength = URL_MAX_LENGTH - restOfUrl.length - encodeURIComponent('filter[ids]=,,').length;
-  var encodedIds = encodeURIComponent(ids.join(','));
-
-  if (encodedIds.length <= maxLength) {
-    return [ids.join(',')];
-  }
-
-  var minLength = maxLength - idLength;
-  var regexp = new RegExp(".{".concat(minLength, ",").concat(maxLength, "}%2C"), 'g'); // the matches
-
-  var matched = encodedIds.match(regexp); // everything that doesn't match, ie the last of the ids
-
-  var tail = encodedIds.replace(regexp, ''); // we manually strip the ',' at the end because javascript's non-capturing regex groups are hard to manage
+  ids = ids.map(String);
+  var firstId = ids.shift();
+  var encodedIds = ids.reduce(function (nestedArray, id) {
+    var workingString = nestedArray[nestedArray.length - 1];
+    var longerString = "".concat(workingString).concat(ENCODED_COMMA).concat(id);
+
+    if (longerString.length < maxLength) {
+      nestedArray[nestedArray.length - 1] = longerString;
+    } else {
+      nestedArray.push(id);
+    }
 
-  return [].concat(_toConsumableArray(matched), [tail]).map(decodeURIComponent).map(function (string) {
-    return string.replace(/,$/, '');
-  });
+    return nestedArray;
+  }, [firstId]);
+  return encodedIds.map(decodeURIComponent);
 }
 
 function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
diff --git a/dist/mobx-async-store.esm.js b/dist/mobx-async-store.esm.js
index b2496988..76ad2d78 100644
--- a/dist/mobx-async-store.esm.js
+++ b/dist/mobx-async-store.esm.js
@@ -41,6 +41,7 @@ function _wrapRegExp(re, groups) { _wrapRegExp = function _wrapRegExp(re, groups
 var pending = {};
 var counter = {};
 var URL_MAX_LENGTH = 1024;
+var ENCODED_COMMA = encodeURIComponent(',');
 
 var incrementor = function incrementor(key) {
   return function () {
@@ -280,26 +281,22 @@ function parseErrorPointer() {
 
 function deriveIdQueryStrings(ids) {
   var restOfUrl = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
-  var idLength = Math.max.apply(Math, _toConsumableArray(ids.map(function (id) {
-    return String(id).length;
-  })));
   var maxLength = URL_MAX_LENGTH - restOfUrl.length - encodeURIComponent('filter[ids]=,,').length;
-  var encodedIds = encodeURIComponent(ids.join(','));
-
-  if (encodedIds.length <= maxLength) {
-    return [ids.join(',')];
-  }
-
-  var minLength = maxLength - idLength;
-  var regexp = new RegExp(".{".concat(minLength, ",").concat(maxLength, "}%2C"), 'g'); // the matches
-
-  var matched = encodedIds.match(regexp); // everything that doesn't match, ie the last of the ids
-
-  var tail = encodedIds.replace(regexp, ''); // we manually strip the ',' at the end because javascript's non-capturing regex groups are hard to manage
+  ids = ids.map(String);
+  var firstId = ids.shift();
+  var encodedIds = ids.reduce(function (nestedArray, id) {
+    var workingString = nestedArray[nestedArray.length - 1];
+    var longerString = "".concat(workingString).concat(ENCODED_COMMA).concat(id);
+
+    if (longerString.length < maxLength) {
+      nestedArray[nestedArray.length - 1] = longerString;
+    } else {
+      nestedArray.push(id);
+    }
 
-  return [].concat(_toConsumableArray(matched), [tail]).map(decodeURIComponent).map(function (string) {
-    return string.replace(/,$/, '');
-  });
+    return nestedArray;
+  }, [firstId]);
+  return encodedIds.map(decodeURIComponent);
 }
 
 function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
diff --git a/package.json b/package.json
index fe7e7b11..2c1cc837 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@artemisag/mobx-async-store",
-  "version": "3.4.0",
+  "version": "3.4.1",
   "module": "dist/mobx-async-store.esm.js",
   "browser": "dist/mobx-async-store.cjs.js",
   "main": "dist/mobx-async-store.cjs.js",
diff --git a/spec/utils.spec.js b/spec/utils.spec.js
index f4b4b5be..4918beff 100644
--- a/spec/utils.spec.js
+++ b/spec/utils.spec.js
@@ -9,6 +9,7 @@ describe('deriveIdQueryStrings', () => {
   it('splits ids into an expected length', () => {
     const idQueryStrings = deriveIdQueryStrings(longIds, baseUrl)
     expect(idQueryStrings).toHaveLength(8)
+    expect(longIds.join()).toEqual(idQueryStrings.join().split().join())
     idQueryStrings.forEach(ids => {
       expect(baseUrl.length + QueryString.stringify({ filter: { ids } }).length).toBeLessThan(URL_MAX_LENGTH)
     })
diff --git a/src/utils.js b/src/utils.js
index b1df7b58..0723e269 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -7,6 +7,7 @@ import flattenDeep from 'lodash/flattenDeep'
 const pending = {}
 const counter = {}
 export const URL_MAX_LENGTH = 1024
+const ENCODED_COMMA = encodeURIComponent(',')
 
 const incrementor = (key) => () => {
   const count = (counter[key] || 0) + 1
@@ -238,22 +239,23 @@ export function parseErrorPointer (error = {}) {
  */
 
 export function deriveIdQueryStrings (ids, restOfUrl = '') {
-  const idLength = Math.max(...ids.map(id => String(id).length))
   const maxLength = URL_MAX_LENGTH - restOfUrl.length - encodeURIComponent('filter[ids]=,,').length
 
-  const encodedIds = encodeURIComponent(ids.join(','))
-  if (encodedIds.length <= maxLength) {
-    return [ids.join(',')]
-  }
+  ids = ids.map(String)
+  const firstId = ids.shift()
+
+  const encodedIds = ids.reduce((nestedArray, id) => {
+    const workingString = nestedArray[nestedArray.length - 1]
+    const longerString = `${workingString}${ENCODED_COMMA}${id}`
 
-  const minLength = maxLength - idLength
+    if (longerString.length < maxLength) {
+      nestedArray[nestedArray.length - 1] = longerString
+    } else {
+      nestedArray.push(id)
+    }
 
-  const regexp = new RegExp(`.{${minLength},${maxLength}}%2C`, 'g')
-  // the matches
-  const matched = encodedIds.match(regexp)
-  // everything that doesn't match, ie the last of the ids
-  const tail = encodedIds.replace(regexp, '')
+    return nestedArray
+  }, [firstId])
 
-  // we manually strip the ',' at the end because javascript's non-capturing regex groups are hard to manage
-  return [...matched, tail].map(decodeURIComponent).map(string => string.replace(/,$/, ''))
+  return encodedIds.map(decodeURIComponent)
 }