diff --git a/src/Terminal.ts b/src/Terminal.ts
index b7906ecc..4e7c2c67 100644
--- a/src/Terminal.ts
+++ b/src/Terminal.ts
@@ -622,7 +622,7 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
 
     // Create main element container
     this.element = this._document.createElement('div');
-    this.element.dir = "ltr";   //xterm.css assumes LTR
+    this.element.dir = 'ltr';   //xterm.css assumes LTR
     this.element.classList.add('terminal');
     this.element.classList.add('xterm');
     this.element.setAttribute('tabindex', '0');