diff --git a/docs/src/api/class-page.md b/docs/src/api/class-page.md
index 9978dd333b..554cc0813c 100644
--- a/docs/src/api/class-page.md
+++ b/docs/src/api/class-page.md
@@ -2363,10 +2363,19 @@ page.goto("https://example.com")
 ```
 
 ### param: Page.setViewportSize.viewportSize
+* langs: js, python
 - `viewportSize` <[Object]>
   - `width` <[int]> page width in pixels.
   - `height` <[int]> page height in pixels.
 
+### param: Page.setViewportSize.width
+* langs: csharp, java
+- `width` <[int]> page width in pixels.
+
+### param: Page.setViewportSize.height
+* langs: csharp, java
+- `height` <[int]> page height in pixels.
+
 ## async method: Page.tap
 
 This method taps an element matching [`param: selector`] by performing the following steps: