diff --git a/.gitignore b/.gitignore
index aadd369..1b6f326 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 vendor
 composer.lock
 build
+.phpunit.result.cache
\ No newline at end of file
diff --git a/composer.json b/composer.json
index fcbf9d1..0b30ea4 100644
--- a/composer.json
+++ b/composer.json
@@ -16,10 +16,10 @@
         }
     ],
     "require": {
-        "php": "^5.6 || ^7.0"
+        "php": "^5.6 || ^7.0 || ^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7"
+        "phpunit/phpunit": "^5.7 || ^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Encoding.php b/src/Encoding.php
index c23e4fe..0e3003c 100644
--- a/src/Encoding.php
+++ b/src/Encoding.php
@@ -42,8 +42,8 @@ public function encodeFile($file, $encoding_to = 'UTF-8', $encodings_detected =
                 } else {
                     return false;
                 }
-            } catch (Exception $e) {
-                if (file_exits($fileW)) {
+            } catch (\Exception $e) {
+                if (file_exists($fileW)) {
                     unlink($fileW);
                 }
 
diff --git a/tests/FileEncodingTest.php b/tests/FileEncodingTest.php
index dc084f6..4bd77fe 100644
--- a/tests/FileEncodingTest.php
+++ b/tests/FileEncodingTest.php
@@ -7,7 +7,7 @@
 
 class FileEncodingTest extends TestCase
 {
-    public function setUp()
+    public function setUp() : void
     {
         parent::setUp();
         copy(__DIR__.'/files/test_iso-8859-1.txt', __DIR__.'/files/iso88591.txt');