diff --git a/tests/baselines/reference/mappedTypes4.types b/tests/baselines/reference/mappedTypes4.types
index 7292e143b42..8a5b6af5319 100644
--- a/tests/baselines/reference/mappedTypes4.types
+++ b/tests/baselines/reference/mappedTypes4.types
@@ -41,17 +41,17 @@ function boxify<T>(obj: T): Boxified<T> {
 
         for (let k in obj) {
 >k : Extract<keyof T, string>
->obj : T
+>obj : T & object
 
             result[k] = { value: obj[k] };
->result[k] = { value: obj[k] } : { value: T[Extract<keyof T, string>]; }
+>result[k] = { value: obj[k] } : { value: (T & object)[Extract<keyof T, string>]; }
 >result[k] : Boxified<T>[Extract<keyof T, string>]
 >result : Boxified<T>
 >k : Extract<keyof T, string>
->{ value: obj[k] } : { value: T[Extract<keyof T, string>]; }
->value : T[Extract<keyof T, string>]
->obj[k] : T[Extract<keyof T, string>]
->obj : T
+>{ value: obj[k] } : { value: (T & object)[Extract<keyof T, string>]; }
+>value : (T & object)[Extract<keyof T, string>]
+>obj[k] : (T & object)[Extract<keyof T, string>]
+>obj : T & object
 >k : Extract<keyof T, string>
         }
         return result;