diff --git a/types/jsforce/api/metadata.d.ts b/types/jsforce/api/metadata.d.ts
index b53ce9f5ee..949d94074d 100644
--- a/types/jsforce/api/metadata.d.ts
+++ b/types/jsforce/api/metadata.d.ts
@@ -27,11 +27,11 @@ interface DeployResult {
 }
 
 interface MetadataObject {
-    childXmlNames: string[];
-    directoryName: string;
-    inFolder: boolean;
-    metaFile: boolean;
-    suffix: string;
+    childXmlNames?: string[];
+    directoryName?: string;
+    inFolder?: boolean;
+    metaFile?: boolean;
+    suffix?: string;
     xmlName: string;
 }
 
@@ -102,10 +102,15 @@ interface RetrieveRequest {
     unpackaged?: Package;
 }
 
+interface RetrieveMessage {
+    fileName: string;
+    problem: string;
+}
+
 interface RetrieveResult {
     fileProperties: FileProperties[];
     id: string;
-    messages: object[];
+    messages: RetrieveMessage[];
     zipFile: string
 }