diff --git a/src/vs/workbench/parts/files/common/editors/fileEditorInput.ts b/src/vs/workbench/parts/files/common/editors/fileEditorInput.ts
index 1393994840d3f7debfe3a1272dd1f88399c5a953..e3806ca1e36c0453f2ae883cbdf85b3db1d9d348 100644
--- a/src/vs/workbench/parts/files/common/editors/fileEditorInput.ts
+++ b/src/vs/workbench/parts/files/common/editors/fileEditorInput.ts
@@ -6,6 +6,7 @@
 
 import { localize } from 'vs/nls';
 import { TPromise } from 'vs/base/common/winjs.base';
+import { memoize } from 'vs/base/common/decorators';
 import paths = require('vs/base/common/paths');
 import labels = require('vs/base/common/labels');
 import URI from 'vs/base/common/uri';
@@ -33,14 +34,6 @@ export class FileEditorInput extends EditorInput implements IFileEditorInput {
 
 	private name: string;
 
-	private shortDescription: string;
-	private mediumDescription: string;
-	private longDescription: string;
-
-	private shortTitle: string;
-	private mediumTitle: string;
-	private longTitle: string;
-
 	private toUnbind: IDisposable[];
 
 	/**
@@ -130,35 +123,65 @@ export class FileEditorInput extends EditorInput implements IFileEditorInput {
 		return this.decorateOrphanedFiles(this.name);
 	}
 
+	@memoize
+	private get shortDescription(): string {
+		return paths.basename(labels.getPathLabel(paths.dirname(this.resource.path), void 0, this.environmentService));
+	}
+
+	@memoize
+	private get mediumDescription(): string {
+		return labels.getPathLabel(paths.dirname(this.resource.path), this.contextService, this.environmentService);
+	}
+
+	@memoize
+	private get longDescription(): string {
+		return labels.getPathLabel(paths.dirname(this.resource.path), void 0, this.environmentService);
+	}
+
 	public getDescription(verbosity: Verbosity = Verbosity.MEDIUM): string {
 		let description: string;
 		switch (verbosity) {
 			case Verbosity.SHORT:
-				description = this.shortDescription ? this.shortDescription : (this.shortDescription = paths.basename(labels.getPathLabel(paths.dirname(this.resource.fsPath), void 0, this.environmentService)));
+				description = this.shortDescription;
 				break;
 			case Verbosity.LONG:
-				description = this.longDescription ? this.longDescription : (this.longDescription = labels.getPathLabel(paths.dirname(this.resource.fsPath), void 0, this.environmentService));
+				description = this.longDescription;
 				break;
 			case Verbosity.MEDIUM:
 			default:
-				description = this.mediumDescription ? this.mediumDescription : (this.mediumDescription = labels.getPathLabel(paths.dirname(this.resource.fsPath), this.contextService, this.environmentService));
+				description = this.mediumDescription;
 				break;
 		}
 
 		return description;
 	}
 
+	@memoize
+	private get shortTitle(): string {
+		return this.getName();
+	}
+
+	@memoize
+	private get mediumTitle(): string {
+		return labels.getPathLabel(this.resource, this.contextService, this.environmentService);
+	}
+
+	@memoize
+	private get longTitle(): string {
+		return labels.getPathLabel(this.resource, void 0, this.environmentService);
+	}
+
 	public getTitle(verbosity: Verbosity): string {
 		let title: string;
 		switch (verbosity) {
 			case Verbosity.SHORT:
-				title = this.shortTitle ? this.shortTitle : (this.shortTitle = this.getName());
+				title = this.shortTitle;
 				break;
 			case Verbosity.MEDIUM:
-				title = this.mediumTitle ? this.mediumTitle : (this.mediumTitle = labels.getPathLabel(this.resource, this.contextService, this.environmentService));
+				title = this.mediumTitle;
 				break;
 			case Verbosity.LONG:
-				title = this.longTitle ? this.longTitle : (this.longTitle = labels.getPathLabel(this.resource, void 0, this.environmentService));
+				title = this.longTitle;
 				break;
 		}