diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index e0f16a00c2b..9570617a106 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -1774,10 +1774,10 @@ namespace ts {
         StringLike = String | StringLiteral,
         NumberLike = Number | Enum,
         ObjectType = Class | Interface | Reference | Tuple | Anonymous,
-        UnionOrIntersection = Union | Intersection,
+        UnionOrIntersection = Union | Intersection,
         StructuredType = ObjectType | Union | Intersection,
         /* @internal */
-        RequiresWidening = ContainsUndefinedOrNull | ContainsObjectLiteral
+        RequiresWidening = ContainsUndefinedOrNull | ContainsObjectLiteral
     }
 
     // Properties common to all types