--- a/testing/marionette/driver.js
+++ b/testing/marionette/driver.js
@@ -2403,17 +2403,17 @@ GeckoDriver.prototype.setScreenOrientati
     "portrait", "landscape",
     "portrait-primary", "landscape-primary",
     "portrait-secondary", "landscape-secondary"
   ];
 
   let or = String(cmd.parameters.orientation);
   let mozOr = or.toLowerCase();
   if (ors.indexOf(mozOr) < 0) {
-    throw new WebDriverError(`Unknown screen orientation: ${or}`);
+    throw new InvalidArgumentError(`Unknown screen orientation: ${or}`);
   }
 
   let win = this.getCurrentWindow();
   if (!win.screen.mozLockOrientation(mozOr)) {
     throw new WebDriverError(`Unable to set screen orientation: ${or}`);
   }
 };