diff --git a/src/Parser/DomainPart.php b/src/Parser/DomainPart.php
index 03f8488..4ca54f2 100644
--- a/src/Parser/DomainPart.php
+++ b/src/Parser/DomainPart.php
@@ -280,9 +280,9 @@ private function checkLabelLength(bool $isEndOfDomain = false) : Result
     {
         if ($this->lexer->token['type'] === EmailLexer::S_DOT || $isEndOfDomain) {
             if ($this->isLabelTooLong($this->label)) {
-                $this->label = '';
                 return new InvalidEmail(new LabelTooLong(), $this->lexer->token['value']);
             }
+            $this->label = '';
         }
         $this->label .= $this->lexer->token['value'];
         return new ValidEmail();
diff --git a/tests/EmailValidator/Validation/RFCValidationDomainPartTest.php b/tests/EmailValidator/Validation/RFCValidationDomainPartTest.php
index b989298..9a5f7f7 100644
--- a/tests/EmailValidator/Validation/RFCValidationDomainPartTest.php
+++ b/tests/EmailValidator/Validation/RFCValidationDomainPartTest.php
@@ -76,6 +76,7 @@ public function getValidEmails()
             ['validipv4@[127.0.0.0]'],
             ['validipv4@127.0.0.0'],
             ['withhyphen@domain-exam.com'],
+            ['valid_long_domain@71846jnrsoj91yfhc18rkbrf90ue3onl8y46js38kae8inz0t1.5a-xdycuau.na49.le.example.com']
         );
     }