diff --git a/README.md b/README.md
index 9290caca..08c230e2 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ Generate Release Notes action is dedicated to enhance the quality and organizati
 - **Required**: Yes
 
 ### `chapters`
-- **Description**: An Yaml array defining chapters and corresponding labels for categorization. Each chapter should have a title and a label matching your GitHub issues and PRs.
+- **Description**: An YAML array defining chapters and corresponding labels for categorization. Each chapter should have a title and a label matching your GitHub issues and PRs.
 - **Required**: Yes
 
 ### `row-format-issue`
@@ -140,7 +140,7 @@ Add the following step to your GitHub workflow (in example are used non-default
     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  
   with:
     tag-name: "v0.1.0"
-    chapters:
+    chapters: |
       - {"title": "Breaking Changes 💥", "label": "breaking-change"},
       - {"title": "New Features 🎉", "label": "enhancement"},
       - {"title": "New Features 🎉", "label": "feature"},
@@ -156,7 +156,7 @@ Add the following step to your GitHub workflow (in example are used non-default
     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  
   with:
     tag-name: "v0.1.0"
-    chapters:
+    chapters: |
       - {"title": "Breaking Changes 💥", "label": "breaking-change"},
       - {"title": "New Features 🎉", "label": "enhancement"},
       - {"title": "New Features 🎉", "label": "feature"},
diff --git a/action.yml b/action.yml
index dfd46491..d8dd272a 100644
--- a/action.yml
+++ b/action.yml
@@ -21,9 +21,9 @@ inputs:
     description: 'The tag name of the release to generate notes for.'
     required: true
   chapters:
-    description: 'Yaml array defining chapters and corresponding labels for categorization.'
+    description: 'An YAML array defining chapters and corresponding labels for categorization.'
     required: false
-    default: ''
+    default: []
   duplicity-scope:
     description: 'Allow duplicity of issue lines in chapters. Scopes: custom, service, both, none.'
     required: false