diff --git a/src/lib/logic/sort.test.ts b/src/lib/logic/sort.test.ts
index e17b476a..7a1d74c2 100644
--- a/src/lib/logic/sort.test.ts
+++ b/src/lib/logic/sort.test.ts
@@ -33,7 +33,7 @@ describe('sort', () => {
       ])
     })
 
-    test('should sort object keys using a rootPath', () => {
+    test('should sort a nested object inside an object', () => {
       const object = {
         root: {
           path: { b: 1, c: 1, a: 1 }
@@ -47,6 +47,16 @@ describe('sort', () => {
       ])
     })
 
+    test('should sort a nested object inside an array', () => {
+      const object = [{ b: 1, c: 1, a: 1 }]
+
+      assert.deepStrictEqual(sortJson(object, ['0']), [
+        { op: 'move', from: '/0/a', path: '/0/a' },
+        { op: 'move', from: '/0/b', path: '/0/b' },
+        { op: 'move', from: '/0/c', path: '/0/c' }
+      ])
+    })
+
     test('should sort an array', () => {
       assert.deepStrictEqual(sortJson([2, 3, 1]), [{ op: 'replace', path: '', value: [1, 2, 3] }])
       assert.deepStrictEqual(sortJson([2, 3, 1], undefined, undefined, -1), [
diff --git a/src/lib/logic/sort.ts b/src/lib/logic/sort.ts
index a2922f46..0cf72044 100644
--- a/src/lib/logic/sort.ts
+++ b/src/lib/logic/sort.ts
@@ -38,7 +38,9 @@ export function sortJson(
   itemPath: JSONPath = [],
   direction: 1 | -1 = 1
 ): JSONPatchDocument {
-  if (isJSONArray(getIn(json, rootPath))) {
+  const value = getIn(json, rootPath)
+
+  if (isJSONArray(value)) {
     if (itemPath === undefined) {
       throw new Error('Cannot sort: no property selected by which to sort the array')
     }
@@ -46,7 +48,7 @@ export function sortJson(
     return sortArray(json, rootPath, itemPath, direction)
   }
 
-  if (isObject(json)) {
+  if (isObject(value)) {
     return sortObjectKeys(json, rootPath, direction)
   }