diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 69f610d9..efcfc6be 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -13,6 +13,7 @@ namespace CachetHQ\Cachet\Providers;
 
 use Illuminate\Bus\Dispatcher;
 use Illuminate\Support\ServiceProvider;
+use Illuminate\Support\Str;
 
 class AppServiceProvider extends ServiceProvider
 {
@@ -28,6 +29,10 @@ class AppServiceProvider extends ServiceProvider
         $dispatcher->mapUsing(function ($command) {
             return Dispatcher::simpleMapping($command, 'CachetHQ\Cachet\Commands', 'CachetHQ\Cachet\Handlers\Commands');
         });
+        
+        Str::macro('canonicalize', function ($url) {
+            return preg_replace('/([^\/])$/', '$1/', $url);
+        });
     }
 
     /**