diff --git a/example/php7.4/Genre.php b/example/php7.4/Genre.php
index ff920e7..04b3ea9 100644
--- a/example/php7.4/Genre.php
+++ b/example/php7.4/Genre.php
@@ -54,15 +54,15 @@ public static function cases(): array
         return [self::ROMANCE(), self::COMEDY(), self::DRAMA(), self::NON_FICTION(), self::SCIENTIFIC_WORK()];
     }
 
-    public function __get($propertyName)
+    public function __get($name)
     {
-        switch ($propertyName) {
+        switch ($name) {
             case "name":
                 return $this->name;
             case "value":
                 return $this->value;
             default:
-                trigger_error("Undefined property: Genre::$propertyName");
+                trigger_error("Undefined property: Genre::$name", E_USER_WARNING);
                 return null;
         }
     }
@@ -72,7 +72,7 @@ public static function __callStatic($name, $args)
         $instance = self::$instances[$name] ?? null;
         if ($instance === null) {
             if (!array_key_exists($name, self::$cases)) {
-                throw new \ValueError("unknown case '$name'");
+                throw new \ValueError("unknown case 'Genre::$name'");
             }
             self::$instances[$name] = $instance = new self($name, self::$cases[$name]);
         }
diff --git a/src/Generator/Builder/EnumLegacyBuilder.php b/src/Generator/Builder/EnumLegacyBuilder.php
index a39934a..099923a 100644
--- a/src/Generator/Builder/EnumLegacyBuilder.php
+++ b/src/Generator/Builder/EnumLegacyBuilder.php
@@ -61,15 +61,15 @@ public function build(Enum $enum, PhpNamespace $ns): EnumType|ClassType
 
         $class
             ->addMethod('__get')
-            ->setParameters([ new Parameter('propertyName') ])
+            ->setParameters([ new Parameter('name') ])
             ->setPublic()
-            ->addBody('switch ($propertyName) {')
+            ->addBody('switch ($name) {')
             ->addBody('    case "name":')
             ->addBody('        return $this->name;')
             ->addBody('    case "value":')
             ->addBody('        return $this->value;')
             ->addBody('    default:')
-            ->addBody('        trigger_error("Undefined property: ' . $enum->getShortName() . '::$propertyName");')
+            ->addBody('        trigger_error("Undefined property: ' . $enum->getShortName() . '::$name", E_USER_WARNING);')
             ->addBody('        return null;')
             ->addBody('}');
 
@@ -81,7 +81,7 @@ public function build(Enum $enum, PhpNamespace $ns): EnumType|ClassType
             ->addBody('$instance = self::$instances[$name] ?? null;')
             ->addBody('if ($instance === null) {')
             ->addBody('    if (!array_key_exists($name, self::$cases)) {')
-            ->addBody('        throw new \ValueError("unknown case \'$name\'");')
+            ->addBody('        throw new \ValueError("unknown case ?");', [ new Literal("'{$enum->getShortName()}::\$name'") ])
             ->addBody('    }')
             ->addBody('    self::$instances[$name] = $instance = new self($name, self::$cases[$name]);')
             ->addBody('}')