diff --git a/app/Services/DecisionEvents/Registry.php b/app/Services/DecisionEvents/Registry.php
index cbd0d94..0dbf14a 100644
--- a/app/Services/DecisionEvents/Registry.php
+++ b/app/Services/DecisionEvents/Registry.php
@@ -24,9 +24,12 @@ public static function resolve(string $key): DecisionEventHandler
     {
         $key = trim(strtolower($key));
         $class = static::$map[$key] ?? null;
-        if (! $class || ! class_exists($class)) {
+        if (! $class) {
             throw new InvalidArgumentException("Unknown decision event handler for key: {$key}");
         }
+        if (! class_exists($class)) {
+            throw new InvalidArgumentException("Handler class {$class} for key {$key} does not exist (check autoload)");
+        }
         $handler = app($class);
         if (! $handler instanceof DecisionEventHandler) {
             throw new InvalidArgumentException("Handler for key {$key} must implement DecisionEventHandler");