diff --git a/app/External/Slack/Modals/OpenDoorModal.php b/app/External/Slack/Modals/OpenDoorModal.php
index 9719a3c..b66deb3 100644
--- a/app/External/Slack/Modals/OpenDoorModal.php
+++ b/app/External/Slack/Modals/OpenDoorModal.php
@@ -62,7 +62,7 @@ public static function handle(SlackRequest $request)
             ->first();
 
         if (is_null($door)) {
-            throw new \Exception("The door for ${selectedOption['value']} was null");
+            throw new \Exception("The door for {$selectedOption['value']} was null");
         }
 
         /** @var SlackApi $slackApi */