diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index f0e96338258..40c99e7bcd2 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -65,26 +65,26 @@ declare module 'vscode' {
 		 * Create an error to signal that a file or folder wasn't found.
 		 * @param messageOrUri Message or uri.
 		 */
-		static EntryNotFound(messageOrUri?: string | Uri): FileSystemError;
+		static FileNotFound(messageOrUri?: string | Uri): FileSystemError;
 
 		/**
 		 * Create an error to signal that a file or folder already exists, e.g. when
 		 * creating but not overwriting a file.
 		 * @param messageOrUri Message or uri.
 		 */
-		static EntryExists(messageOrUri?: string | Uri): FileSystemError;
+		static FileExists(messageOrUri?: string | Uri): FileSystemError;
 
 		/**
 		 * Create an error to signal that a file is not a folder.
 		 * @param messageOrUri Message or uri.
 		 */
-		static EntryNotADirectory(messageOrUri?: string | Uri): FileSystemError;
+		static FileNotADirectory(messageOrUri?: string | Uri): FileSystemError;
 
 		/**
 		 * Create an error to signal that a file is a folder.
 		 * @param messageOrUri Message or uri.
 		 */
-		static EntryIsADirectory(messageOrUri?: string | Uri): FileSystemError;
+		static FileIsADirectory(messageOrUri?: string | Uri): FileSystemError;
 
 		/**
 		 * Creates a new filesystem error.
diff --git a/src/vs/workbench/api/node/extHostTypes.ts b/src/vs/workbench/api/node/extHostTypes.ts
index 731189500ed..b1cb67d05c0 100644
--- a/src/vs/workbench/api/node/extHostTypes.ts
+++ b/src/vs/workbench/api/node/extHostTypes.ts
@@ -1866,17 +1866,17 @@ export enum DeprecatedFileType {
 
 export class FileSystemError extends Error {
 
-	static EntryExists(messageOrUri?: string | URI): FileSystemError {
-		return new FileSystemError(messageOrUri, 'EntryExists', FileSystemError.EntryExists);
+	static FileExists(messageOrUri?: string | URI): FileSystemError {
+		return new FileSystemError(messageOrUri, 'EntryExists', FileSystemError.FileExists);
 	}
-	static EntryNotFound(messageOrUri?: string | URI): FileSystemError {
-		return new FileSystemError(messageOrUri, 'EntryNotFound', FileSystemError.EntryNotFound);
+	static FileNotFound(messageOrUri?: string | URI): FileSystemError {
+		return new FileSystemError(messageOrUri, 'EntryNotFound', FileSystemError.FileNotFound);
 	}
-	static EntryNotADirectory(messageOrUri?: string | URI): FileSystemError {
-		return new FileSystemError(messageOrUri, 'EntryNotADirectory', FileSystemError.EntryNotADirectory);
+	static FileNotADirectory(messageOrUri?: string | URI): FileSystemError {
+		return new FileSystemError(messageOrUri, 'EntryNotADirectory', FileSystemError.FileNotADirectory);
 	}
-	static EntryIsADirectory(messageOrUri?: string | URI): FileSystemError {
-		return new FileSystemError(messageOrUri, 'EntryIsADirectory', FileSystemError.EntryIsADirectory);
+	static FileIsADirectory(messageOrUri?: string | URI): FileSystemError {
+		return new FileSystemError(messageOrUri, 'EntryIsADirectory', FileSystemError.FileIsADirectory);
 	}
 
 	constructor(uriOrMessage?: string | URI, code?: string, terminator?: Function) {