diff --git a/src/harness/harness.ts b/src/harness/harness.ts
index 14cb3147c323d..9e27f500b80f9 100644
--- a/src/harness/harness.ts
+++ b/src/harness/harness.ts
@@ -1339,7 +1339,7 @@ namespace Harness {
             });
         }
 
-        export function doTypeAndSymbolBaseline(baselinePath: string, result: CompilerResult, allFiles: {unitName: string, content: string}[]) {
+        export function doTypeAndSymbolBaseline(baselinePath: string, result: CompilerResult, allFiles: {unitName: string, content: string}[], opts?: Harness.Baseline.BaselineOptions) {
             if (result.errors.length !== 0) {
                 return;
             }
@@ -1396,7 +1396,7 @@ namespace Harness {
 
                 const fullExtension = isSymbolBaseLine ? ".symbols" : ".types";
 
-                Harness.Baseline.runBaseline(baselinePath.replace(/\.tsx?/, fullExtension), () => fullBaseLine);
+                Harness.Baseline.runBaseline(baselinePath.replace(/\.tsx?/, fullExtension), () => fullBaseLine, opts);
             }
 
             function generateBaseLine(typeWriterResults: ts.Map<TypeWriterResult[]>, isSymbolBaseline: boolean): string {
diff --git a/src/harness/rwcRunner.ts b/src/harness/rwcRunner.ts
index 5720f9b541c46..d56e8d6d35f63 100644
--- a/src/harness/rwcRunner.ts
+++ b/src/harness/rwcRunner.ts
@@ -226,7 +226,7 @@ namespace RWC {
                 Harness.Compiler.doTypeAndSymbolBaseline(baseName, compilerResult, inputFiles
                     .concat(otherFiles)
                     .filter(file => !!compilerResult.program.getSourceFile(file.unitName))
-                    .filter(e => !Harness.isDefaultLibraryFile(e.unitName)));
+                    .filter(e => !Harness.isDefaultLibraryFile(e.unitName)), baselineOpts);
             });
         });
     }