diff --git a/packages/core/ui/styling/style-scope.ts b/packages/core/ui/styling/style-scope.ts
index e27a3ef54..55ea9ff34 100644
--- a/packages/core/ui/styling/style-scope.ts
+++ b/packages/core/ui/styling/style-scope.ts
@@ -216,7 +216,7 @@ class CSSSource {
 					const cssTreeParse = require('../../css/css-tree-parser').cssTreeParse;
 					this._ast = cssTreeParse(this._source, this._file);
 					return;
-				case 'nativescript':
+				case 'nativescript':{
 					const CSS3Parser = require('../../css/parser').CSS3Parser;
 					const CSSNativeScript = require('../../css/parser').CSSNativeScript;
 					const cssparser = new CSS3Parser(this._source);