diff --git a/extensions/markdown/src/previewContentProvider.ts b/extensions/markdown/src/previewContentProvider.ts
index 7ef099a8624..6a65997b19f 100644
--- a/extensions/markdown/src/previewContentProvider.ts
+++ b/extensions/markdown/src/previewContentProvider.ts
@@ -20,14 +20,12 @@ export function getMarkdownUri(uri: vscode.Uri) {
 
 export class MDDocumentContentProvider implements vscode.TextDocumentContentProvider {
 	private _onDidChange = new vscode.EventEmitter<vscode.Uri>();
-	private _waiting: boolean;
+	private _waiting: boolean = false;
 
 	constructor(
 		private engine: MarkdownEngine,
 		private context: vscode.ExtensionContext
-	) {
-		this._waiting = false;
-	}
+	) { }
 
 	private getMediaPath(mediaFile: string): string {
 		return vscode.Uri.file(this.context.asAbsolutePath(path.join('media', mediaFile))).toString();
@@ -38,27 +36,28 @@ export class MDDocumentContentProvider implements vscode.TextDocumentContentProv
 	}
 
 	private fixHref(resource: vscode.Uri, href: string): string {
-		if (href) {
-			// Use href if it is already an URL
-			if (vscode.Uri.parse(href).scheme) {
-				return href;
-			}
-
-			// Use href as file URI if it is absolute
-			if (this.isAbsolute(href)) {
-				return vscode.Uri.file(href).toString();
-			}
-
-			// use a workspace relative path if there is a workspace
-			let rootPath = vscode.workspace.rootPath;
-			if (rootPath) {
-				return vscode.Uri.file(path.join(rootPath, href)).toString();
-			}
-
-			// otherwise look relative to the markdown file
-			return vscode.Uri.file(path.join(path.dirname(resource.fsPath), href)).toString();
+		if (!href) {
+			return href;
 		}
-		return href;
+
+		// Use href if it is already an URL
+		if (vscode.Uri.parse(href).scheme) {
+			return href;
+		}
+
+		// Use href as file URI if it is absolute
+		if (this.isAbsolute(href)) {
+			return vscode.Uri.file(href).toString();
+		}
+
+		// use a workspace relative path if there is a workspace
+		let rootPath = vscode.workspace.rootPath;
+		if (rootPath) {
+			return vscode.Uri.file(path.join(rootPath, href)).toString();
+		}
+
+		// otherwise look relative to the markdown file
+		return vscode.Uri.file(path.join(path.dirname(resource.fsPath), href)).toString();
 	}
 
 	private computeCustomStyleSheetIncludes(uri: vscode.Uri): string {