diff --git a/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts b/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
index 1e2e17a9433..f627075683c 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadLanguageFeatures.ts
@@ -82,6 +82,9 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 			return <modes.SymbolInformation[]>data;
 		} else {
 			data.location = MainThreadLanguageFeatures._reviveLocationDto(data.location);
+			if (data.children) {
+				data.children.forEach(MainThreadLanguageFeatures._reviveSymbolInformationDto);
+			}
 			return <modes.SymbolInformation>data;
 		}
 	}
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index ec48069d253..8392f9a9787 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -664,6 +664,8 @@ export interface SymbolInformationDto extends IdObject {
 	containerName?: string;
 	kind: modes.SymbolKind;
 	location: LocationDto;
+	definingRange: IRange;
+	children?: SymbolInformationDto[];
 }
 
 export interface WorkspaceSymbolsDto extends IdObject {