diff --git a/src/vs/workbench/services/dialogs/browser/remoteFileDialog.ts b/src/vs/workbench/services/dialogs/browser/remoteFileDialog.ts
index 696f4681b4ee952653b06ab7969da337935a2347..28fb4787d24a103d47b097c7721a08b4a89ac0fe 100644
--- a/src/vs/workbench/services/dialogs/browser/remoteFileDialog.ts
+++ b/src/vs/workbench/services/dialogs/browser/remoteFileDialog.ts
@@ -762,8 +762,8 @@ export class RemoteFileDialog {
 
 	private pathAppend(uri: URI, additional: string): string {
 		if ((additional === '..') || (additional === '.')) {
-			const basePath = this.pathFromUri(uri);
-			return basePath + this.separator + additional;
+			const basePath = this.pathFromUri(uri, true);
+			return basePath + additional;
 		} else {
 			return this.pathFromUri(resources.joinPath(uri, additional));
 		}