diff --git a/src/harness/projectsRunner.ts b/src/harness/projectsRunner.ts
index 52467fdffd6..4bb9969d8bc 100644
--- a/src/harness/projectsRunner.ts
+++ b/src/harness/projectsRunner.ts
@@ -164,7 +164,8 @@ class ProjectRunner extends RunnerBase {
                     mapRoot: testCase.resolveMapRoot && testCase.mapRoot ? ts.sys.resolvePath(testCase.mapRoot) : testCase.mapRoot,
                     sourceRoot: testCase.resolveSourceRoot && testCase.sourceRoot ? ts.sys.resolvePath(testCase.sourceRoot) : testCase.sourceRoot,
                     module: moduleKind,
-                    noResolve: testCase.noResolve
+                    noResolve: testCase.noResolve,
+                    target: ts.ScriptTarget.ES6
                 };
             }
 
@@ -186,7 +187,7 @@ class ProjectRunner extends RunnerBase {
             function createCompilerHost(): ts.CompilerHost {
                 return {
                     getSourceFile,
-                    getDefaultLibFilename: options => options.target === ts.ScriptTarget.ES6 ? "lib.es6.d.ts" : "lib.d.ts",
+                    getDefaultLibFilename: options => Harness.Compiler.defaultLibFileName,
                     writeFile,
                     getCurrentDirectory,
                     getCanonicalFileName: Harness.Compiler.getCanonicalFileName,
diff --git a/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt b/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt
index 5541c8d7c19..a18186f558d 100644
--- a/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt
+++ b/tests/baselines/reference/project/noDefaultLib/amd/noDefaultLib.errors.txt
@@ -1,3 +1,4 @@
+error TS2318: Cannot find global type 'TemplateStringsArray'.
 error TS2318: Cannot find global type 'String'.
 error TS2318: Cannot find global type 'RegExp'.
 error TS2318: Cannot find global type 'Object'.
@@ -9,6 +10,7 @@ error TS2318: Cannot find global type 'Array'.
 test.ts(3,8): error TS2304: Cannot find name 'Array'.
 
 
+!!! error TS2318: Cannot find global type 'TemplateStringsArray'.
 !!! error TS2318: Cannot find global type 'String'.
 !!! error TS2318: Cannot find global type 'RegExp'.
 !!! error TS2318: Cannot find global type 'Object'.
diff --git a/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt b/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt
index 5541c8d7c19..a18186f558d 100644
--- a/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt
+++ b/tests/baselines/reference/project/noDefaultLib/node/noDefaultLib.errors.txt
@@ -1,3 +1,4 @@
+error TS2318: Cannot find global type 'TemplateStringsArray'.
 error TS2318: Cannot find global type 'String'.
 error TS2318: Cannot find global type 'RegExp'.
 error TS2318: Cannot find global type 'Object'.
@@ -9,6 +10,7 @@ error TS2318: Cannot find global type 'Array'.
 test.ts(3,8): error TS2304: Cannot find name 'Array'.
 
 
+!!! error TS2318: Cannot find global type 'TemplateStringsArray'.
 !!! error TS2318: Cannot find global type 'String'.
 !!! error TS2318: Cannot find global type 'RegExp'.
 !!! error TS2318: Cannot find global type 'Object'.