diff --git a/app/LayoutDriver/Xrandr.php b/app/LayoutDriver/Xrandr.php
index 8443d72..9157a12 100644
--- a/app/LayoutDriver/Xrandr.php
+++ b/app/LayoutDriver/Xrandr.php
@@ -5,26 +5,26 @@ declare(strict_types=1);
 namespace App\LayoutDriver;
 
 /**
- * Interface to xrandr for configuring outputs
+ * Interface to xrandr for configuring outputs.
  *
  * @author Adam Pippin <hello@adampippin.ca>
  */
 class Xrandr implements \App\ILayoutDriver
 {
 	/**
-	 * The xrandr command
+	 * The xrandr command.
 	 * @var \App\System\Command\Xrandr
 	 */
 	protected $_xrandr;
 
 	/**
-	 * Cache of current display parameters
+	 * Cache of current display parameters.
 	 * @var array<string, array>
 	 */
 	protected $_displays;
 
 	/**
-	 * Create a new xrandr driver
+	 * Create a new xrandr driver.
 	 *
 	 * @param \App\System\Command\Xrandr $xrandr_cmd
 	 */
@@ -34,7 +34,7 @@ class Xrandr implements \App\ILayoutDriver
 	}
 
 	/**
-	 * Read display parameters from xrandr
+	 * Read display parameters from xrandr.
 	 *
 	 * @return void
 	 */
@@ -48,10 +48,10 @@ class Xrandr implements \App\ILayoutDriver
 			if (preg_match('/^(?<output>[^ ]+) connected (?<primary>primary )?(?<screen_w>[0-9]+)x(?<screen_h>[0-9]+)\\+(?<screen_x>[0-9]+)\\+(?<screen_y>[0-9]+) /', $line, $match))
 			{
 				$this->_displays[$match['output']] = [
-					'x' => $match['screen_x'],
-					'y' => $match['screen_y'],
-					'w' => $match['screen_w'],
-					'h' => $match['screen_h'],
+					'x' => (int)$match['screen_x'],
+					'y' => (int)$match['screen_y'],
+					'w' => (int)$match['screen_w'],
+					'h' => (int)$match['screen_h'],
 					'primary' => !empty($match['primary'])
 				];
 			}