diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 8fd21ed008a..d605a684a76 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -430,7 +430,7 @@ namespace ts {
         JavaScriptFile = 1 << 5,
 
         // Context flags set directly by the parser.
-        ParserGeneratedFlags = DisallowIn | Yield | Decorator | ThisNodeHasError | Await,
+        ParserGeneratedFlags = DisallowIn | Yield | Decorator | ThisNodeHasError | Await | JavaScriptFile,
 
         // Exclude these flags when parsing a Type
         TypeExcludesFlags = Yield | Await,
diff --git a/src/harness/harness.ts b/src/harness/harness.ts
index 5c191a3b9d7..858607143d2 100644
--- a/src/harness/harness.ts
+++ b/src/harness/harness.ts
@@ -285,6 +285,10 @@ namespace Utils {
                         // data we don't care about in the dump.  We only care what the parser set directly
                         // on the ast.
                         let value = n.parserContextFlags & ts.ParserContextFlags.ParserGeneratedFlags;
+
+                        // Remove the JavaScriptFile flag, as this is just noise for JSDocParser and Test262 tests
+                        // (which are the only tests that use this function).
+                        value = value & ~ts.ParserContextFlags.JavaScriptFile;
                         if (value) {
                             o[propertyName] = getParserContextFlagName(value);
                         }
diff --git a/tests/cases/unittests/jsDocParsing.ts b/tests/cases/unittests/jsDocParsing.ts
index 9988383b467..9c68cea3297 100644
--- a/tests/cases/unittests/jsDocParsing.ts
+++ b/tests/cases/unittests/jsDocParsing.ts
@@ -11,6 +11,7 @@ module ts {
                 assert.isTrue(typeAndDiagnostics && typeAndDiagnostics.diagnostics.length === 0);
 
                 let result = Utils.sourceFileToJSON(typeAndDiagnostics.jsDocTypeExpression.type);
+
                 assert.equal(result, expected);
             }
 
@@ -998,7 +999,7 @@ module ts {
                         ? JSON.parse(Utils.sourceFileToJSON(v))
                         : v;
                 }, 4);
-                
+
                 if (result !== expected) {
                     // Turn on a human-readable diff
                     if (typeof require !== 'undefined') {