diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index 528ac5cbe26f235a90df0e32232d4a0a67db2e7b..5a221ae1c9f5f3339a319af1cc024d147ab21bce 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -1543,7 +1543,7 @@ declare module 'vscode' {
 		 * }
 		 * ```
 		 */
-		filters: { [name: string]: string[] };
+		filters?: { [name: string]: string[] };
 	}
 
 	/**
@@ -1569,7 +1569,7 @@ declare module 'vscode' {
 		 * }
 		 * ```
 		 */
-		filters: { [name: string]: string[] };
+		filters?: { [name: string]: string[] };
 	}
 
 	/**
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index 1a04c2f8dd0eed35d756a0ad52f27f9454b476c6..90588da91f2c3dd73b6ea56d1d4930d6d9fd61c7 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -122,13 +122,13 @@ export interface MainThreadDialogOpenOptions {
 	openFiles?: boolean;
 	openFolders?: boolean;
 	openMany?: boolean;
-	filters: { [name: string]: string[] };
+	filters?: { [name: string]: string[] };
 }
 
 export interface MainThreadDialogSaveOptions {
 	defaultUri?: URI;
 	saveLabel?: string;
-	filters: { [name: string]: string[] };
+	filters?: { [name: string]: string[] };
 }
 
 export interface MainThreadDiaglogsShape extends IDisposable {