diff --git a/src/vs/workbench/api/node/extHostLanguageFeatures.ts b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
index df6a682c648..b4b5d85a067 100644
--- a/src/vs/workbench/api/node/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/node/extHostLanguageFeatures.ts
@@ -74,7 +74,7 @@ class DocumentSymbolAdapter {
 				containerName: info.containerName,
 				range: typeConvert.Range.from(info.location.range),
 				selectionRange: typeConvert.Range.from(info.location.range),
-				children: [] as DocumentSymbol[]
+				children: []
 			};
 
 			while (true) {