diff --git a/src/harness/unittests/cachingInServerLSHost.ts b/src/harness/unittests/cachingInServerLSHost.ts
index 5ce93fa8231..0725bf36a3b 100644
--- a/src/harness/unittests/cachingInServerLSHost.ts
+++ b/src/harness/unittests/cachingInServerLSHost.ts
@@ -72,7 +72,7 @@ namespace ts {
             typingsInstaller: undefined
         };
         const projectService = new server.ProjectService(svcOpts);
-        const rootScriptInfo = projectService.getOrCreateScriptInfo(rootFile, /* openedByClient */true, /*containingProject*/ undefined);
+        const rootScriptInfo = projectService.getOrCreateScriptInfo(rootFile, /* openedByClient */ true, /*containingProject*/ undefined);
 
         const project = projectService.createInferredProjectWithRootFileIfNecessary(rootScriptInfo);
         project.setCompilerOptions({ module: ts.ModuleKind.AMD } );