diff --git a/README.md b/README.md
index 138e1661..82eeeecf 100644
--- a/README.md
+++ b/README.md
@@ -242,7 +242,7 @@ You can use all of the following options with standalone version on <redoc> tag
 * `hideDownloadButton` - do not show "Download" spec button. **THIS DOESN'T MAKE YOUR SPEC PRIVATE**, it just hides the button.
 * `disableSearch` - disable search indexing and search box
 * `onlyRequiredInSamples` - shows only required fields in request samples.
-* `sampleCollapseLevel` - set the collapse level in response samples. Special value 'all' expand all response. Default value = 2.
+* `jsonSampleExpandLevel` - set the default expand level for JSON payload samples (responses and request body). Special value 'all' expands all levels. The default value is `2`.
 * `theme` - ReDoc theme. Not documented yet. For details check source code: [theme.ts](https://github.com/Redocly/redoc/blob/master/src/theme.ts)
 
 ## Advanced usage of standalone version
diff --git a/src/components/JsonViewer/JsonViewer.tsx b/src/components/JsonViewer/JsonViewer.tsx
index 3b213ef8..bf735299 100644
--- a/src/components/JsonViewer/JsonViewer.tsx
+++ b/src/components/JsonViewer/JsonViewer.tsx
@@ -40,7 +40,7 @@ class Json extends React.PureComponent<JsonProps> {
             // tslint:disable-next-line
             ref={node => (this.node = node!)}
             dangerouslySetInnerHTML={{
-              __html: jsonToHTML(this.props.data, options.sampleCollapseLevel),
+              __html: jsonToHTML(this.props.data, options.jsonSampleExpandLevel),
             }}
           />
         )}
diff --git a/src/services/RedocNormalizedOptions.ts b/src/services/RedocNormalizedOptions.ts
index 1690b290..fe924cde 100644
--- a/src/services/RedocNormalizedOptions.ts
+++ b/src/services/RedocNormalizedOptions.ts
@@ -22,7 +22,7 @@ export interface RedocRawOptions {
   onlyRequiredInSamples?: boolean | string;
   showExtensions?: boolean | string | string[];
   hideSingleRequestSampleTab?: boolean | string;
-  sampleCollapseLevel?: number | string | 'all';
+  jsonSampleExpandLevel?: number | string | 'all';
 
   unstable_ignoreMimeParameters?: boolean;
 
@@ -136,7 +136,7 @@ export class RedocNormalizedOptions {
   onlyRequiredInSamples: boolean;
   showExtensions: boolean | string[];
   hideSingleRequestSampleTab: boolean;
-  sampleCollapseLevel: number;
+  jsonSampleExpandLevel: number;
 
   /* tslint:disable-next-line */
   unstable_ignoreMimeParameters: boolean;
@@ -168,8 +168,8 @@ export class RedocNormalizedOptions {
     this.onlyRequiredInSamples = argValueToBoolean(raw.onlyRequiredInSamples);
     this.showExtensions = RedocNormalizedOptions.normalizeShowExtensions(raw.showExtensions);
     this.hideSingleRequestSampleTab = argValueToBoolean(raw.hideSingleRequestSampleTab);
-    this.sampleCollapseLevel = RedocNormalizedOptions.normalizeSampleCollapseLevel(
-      raw.sampleCollapseLevel,
+    this.jsonSampleExpandLevel = RedocNormalizedOptions.normalizeSampleCollapseLevel(
+      raw.jsonSampleExpandLevel,
     );
 
     this.unstable_ignoreMimeParameters = argValueToBoolean(raw.unstable_ignoreMimeParameters);