diff --git a/src/Utilities/Miscellaneous.php b/src/Utilities/Miscellaneous.php
index 39681ed..3038711 100644
--- a/src/Utilities/Miscellaneous.php
+++ b/src/Utilities/Miscellaneous.php
@@ -563,21 +563,22 @@ class Miscellaneous
      * @param string $suffix    (optional) The suffix to add at the end of string
      * @return string
      */
-    public static function substringToWord($text, $maxLength, $suffix = '...')
+    public static function substringToWord(string $text, int $maxLength, string $suffix = '...'): string
     {
         $effect = $text;
+        $encoding = 'utf-8';
 
-        $textLength = mb_strlen($text, 'utf-8');
-        $suffixLength = mb_strlen($suffix, 'utf-8');
+        $textLength = mb_strlen($text, $encoding);
+        $suffixLength = mb_strlen($suffix, $encoding);
 
         $maxLength -= $suffixLength;
 
         if ($textLength > $maxLength) {
-            $effect = mb_substr($text, 0, $maxLength, 'utf-8');
-            $lastSpacePosition = mb_strrpos($effect, ' ', 0, 'utf-8');
+            $effect = mb_substr($text, 0, $maxLength, $encoding);
+            $lastSpacePosition = mb_strrpos($effect, ' ', 0, $encoding);
 
             if (false !== $lastSpacePosition) {
-                $effect = mb_substr($effect, 0, $lastSpacePosition, 'utf-8');
+                $effect = mb_substr($effect, 0, $lastSpacePosition, $encoding);
             }
 
             $effect .= $suffix;
diff --git a/src/Utilities/Reflection.php b/src/Utilities/Reflection.php
index e641338..90ed38a 100644
--- a/src/Utilities/Reflection.php
+++ b/src/Utilities/Reflection.php
@@ -502,7 +502,7 @@ class Reflection
      *
      * @param array|object|string $class    An array of objects, namespaces, object or namespace
      * @param string              $property Name of the property
-     * @param int                 $filter   (optional) Filter of properties. Uses \ReflectionProperty class constants.
+     * @param int|null            $filter   (optional) Filter of properties. Uses \ReflectionProperty class constants.
      *                                      By default all properties are allowed / processed.
      * @return null|ReflectionProperty
      */
@@ -512,7 +512,6 @@ class Reflection
         $properties = self::getProperties($className, $filter);
 
         if (!empty($properties)) {
-            /** @var ReflectionProperty $reflectionProperty */
             foreach ($properties as $reflectionProperty) {
                 if ($reflectionProperty->getName() === $property) {
                     return $reflectionProperty;
diff --git a/tests/Utilities/ReflectionTest.php b/tests/Utilities/ReflectionTest.php
index 1f9ff30..c7adbbe 100644
--- a/tests/Utilities/ReflectionTest.php
+++ b/tests/Utilities/ReflectionTest.php
@@ -222,7 +222,7 @@ class ReflectionTest extends BaseTestCase
     public function testUsesTraitInvalidTrait($trait): void
     {
         $this->expectException(CannotResolveClassNameException::class);
-        self::assertNull(Reflection::usesTrait(DateTime::class, $trait));
+        Reflection::usesTrait(DateTime::class, $trait);
     }
 
     public function testUsesTraitExistingClass(): void