diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index cd72d7d27bfe1..b4a2aabc165f7 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -232,17 +232,17 @@ declare module 'vscode' {
 
 		readonly onDidChange?: Event<FileChange[]>;
 
-		stat(resource: Uri, token: CancellationToken): Thenable<FileStat>;
+		stat(uri: Uri, token: CancellationToken): Thenable<FileStat>;
 
-		readdir(resource: Uri, token: CancellationToken): Thenable<[Uri, FileStat][]>;
+		readdir(uri: Uri, token: CancellationToken): Thenable<[Uri, FileStat][]>;
 
-		readFile(resource: Uri, token: CancellationToken): Thenable<Uint8Array>;
+		readFile(uri: Uri, token: CancellationToken): Thenable<Uint8Array>;
 
-		writeFile(resource: Uri, content: Uint8Array, token: CancellationToken): Thenable<void>;
+		writeFile(uri: Uri, content: Uint8Array, token: CancellationToken): Thenable<void>;
 
 		// todo@remote
 		// Thenable<FileStat>
-		move(resource: Uri, target: Uri): Thenable<FileStat>;
+		rename(oldUri: Uri, newUri: Uri): Thenable<FileStat>;
 
 		// todo@remote
 		// helps with performance bigly
diff --git a/src/vs/workbench/api/node/extHostFileSystem.ts b/src/vs/workbench/api/node/extHostFileSystem.ts
index 2b3d8c6fdeeae..aa5115926ea6f 100644
--- a/src/vs/workbench/api/node/extHostFileSystem.ts
+++ b/src/vs/workbench/api/node/extHostFileSystem.ts
@@ -69,8 +69,8 @@ class FileSystemProviderShim implements vscode.FileSystemProvider2 {
 	stat(resource: vscode.Uri): Thenable<vscode.FileStat> {
 		return this._delegate.stat(resource);
 	}
-	move(resource: vscode.Uri, target: vscode.Uri): Thenable<vscode.FileStat> {
-		return this.move(resource, target);
+	rename(oldUri: vscode.Uri, newUri: vscode.Uri): Thenable<vscode.FileStat> {
+		return this._delegate.move(oldUri, newUri);
 	}
 	readdir(resource: vscode.Uri): Thenable<[vscode.Uri, vscode.FileStat][]> {
 		return this._delegate.readdir(resource);
@@ -186,8 +186,8 @@ export class ExtHostFileSystem implements ExtHostFileSystemShape {
 	$delete(handle: number, resource: UriComponents): TPromise<void, any> {
 		return asWinJsPromise(token => this._fsProvider.get(handle).delete(URI.revive(resource), { recursive: true }));
 	}
-	$move(handle: number, resource: UriComponents, target: UriComponents): TPromise<IStat, any> {
-		return asWinJsPromise(token => this._fsProvider.get(handle).move(URI.revive(resource), URI.revive(target)));
+	$move(handle: number, oldUri: UriComponents, newUri: UriComponents): TPromise<IStat, any> {
+		return asWinJsPromise(token => this._fsProvider.get(handle).rename(URI.revive(oldUri), URI.revive(newUri)));
 	}
 	$mkdir(handle: number, resource: UriComponents): TPromise<IStat, any> {
 		return asWinJsPromise(token => this._fsProvider.get(handle).create(URI.revive(resource), { type: FileType.Dir }));