diff --git a/src/vs/workbench/api/node/extHostDebugService.ts b/src/vs/workbench/api/node/extHostDebugService.ts
index c8b29476bb2502777d7b518d570d40ced9a231a2..2ae91c279e14e6d7f449b0248ed252daac3a6444 100644
--- a/src/vs/workbench/api/node/extHostDebugService.ts
+++ b/src/vs/workbench/api/node/extHostDebugService.ts
@@ -526,7 +526,7 @@ export class ExtHostDebugConsole implements vscode.DebugConsole {
 	}
 }
 
-class ExtHostVariableResolverService implements IConfigurationResolverService {
+export class ExtHostVariableResolverService implements IConfigurationResolverService {
 
 	_serviceBrand: any;
 	_variableResolver: VariableResolver;