diff --git a/README.md b/README.md
index 3fe2f2f098..d2edd26615 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ it is possible to generate initial CSS-classes during SSR:
 import {getInitialRootClassName} from '@gravity-ui/uikit';
 
 const theme = 'light';
-const rootClassName = getInitialRootClassName(theme);
+const rootClassName = getInitialRootClassName({theme});
 ```
 
 ```js
diff --git a/src/components/theme/getBodyClassName.ts b/src/components/theme/getBodyClassName.ts
index c8402496d5..5c658a49f7 100644
--- a/src/components/theme/getBodyClassName.ts
+++ b/src/components/theme/getBodyClassName.ts
@@ -20,6 +20,7 @@ export function getRootClassName(
     return bNew(modifier, addition);
 }
 
-export function getInitialRootClassName(theme?: RealTheme) {
+export function getInitialRootClassName(props: {theme?: RealTheme} = {}) {
+    const {theme} = props;
     return getRootClassName({theme});
 }