diff --git a/packages/editor/src/store/selectors.js b/packages/editor/src/store/selectors.js
index a4e426507f8167..8b8f7136ce3dc2 100644
--- a/packages/editor/src/store/selectors.js
+++ b/packages/editor/src/store/selectors.js
@@ -2056,7 +2056,7 @@ export function isPostLocked( state ) {
  * @return {boolean} Is locked.
  */
 export function isPostSavingLocked( state ) {
-	return state.postSavingLock.length > 0;
+	return Object.keys( state.postSavingLock ).length > 0;
 }
 
 /**
diff --git a/packages/editor/src/store/test/selectors.js b/packages/editor/src/store/test/selectors.js
index 2474cc1e2565f8..4f9e3fa0fd7752 100644
--- a/packages/editor/src/store/test/selectors.js
+++ b/packages/editor/src/store/test/selectors.js
@@ -964,7 +964,7 @@ describe( 'selectors', () => {
 	describe( 'isPostSavingLocked', () => {
 		it( 'should return true if the post has postSavingLocks', () => {
 			const state = {
-				postSavingLock: [ { 1: true } ],
+				postSavingLock: { example: true },
 				currentPost: {},
 				saving: {},
 			};
@@ -974,7 +974,7 @@ describe( 'selectors', () => {
 
 		it( 'should return false if the post has no postSavingLocks', () => {
 			const state = {
-				postSavingLock: [],
+				postSavingLock: {},
 				currentPost: {},
 				saving: {},
 			};