diff --git a/src/Egulias/EmailValidator/EmailValidator.php b/src/Egulias/EmailValidator/EmailValidator.php
index 81eda17..8228730 100644
--- a/src/Egulias/EmailValidator/EmailValidator.php
+++ b/src/Egulias/EmailValidator/EmailValidator.php
@@ -11,7 +11,6 @@ use Egulias\EmailValidator\InvalidEmail;
  */
 class EmailValidator
 {
-    const ERR_EXPECTING_DTEXT    = 129;
     const ERR_NOLOCALPART        = 130;
     const ERR_NODOMAIN           = 131;
     const ERR_CONSECUTIVEDOTS    = 132;
diff --git a/src/Egulias/EmailValidator/Exception/ConsecutiveAt.php b/src/Egulias/EmailValidator/Exception/ConsecutiveAt.php
index 8fa19ab..9c20fe6 100644
--- a/src/Egulias/EmailValidator/Exception/ConsecutiveAt.php
+++ b/src/Egulias/EmailValidator/Exception/ConsecutiveAt.php
@@ -7,9 +7,5 @@ use Egulias\EmailValidator\InvalidEmail;
 class ConsecutiveAt extends InvalidEmail
 {
     const CODE = 128;
-
-    public function __construct()
-    {
-        parent::__construct("Consecutive AT", self::CODE);
-    }
+    const REASON = "Consecutive AT";
 }
diff --git a/src/Egulias/EmailValidator/Exception/DotAtStart.php b/src/Egulias/EmailValidator/Exception/DotAtStart.php
index 6aa3324..d16301a 100644
--- a/src/Egulias/EmailValidator/Exception/DotAtStart.php
+++ b/src/Egulias/EmailValidator/Exception/DotAtStart.php
@@ -7,9 +7,5 @@ use Egulias\EmailValidator\InvalidEmail;
 class DotAtStart extends InvalidEmail
 {
     const CODE = 141;
-
-    public function __construct($part)
-    {
-        parent::__construct("Found DOT at start in " . $part, self::CODE);
-    }
+    const REASON = "Found DOT at start";
 }
diff --git a/src/Egulias/EmailValidator/Exception/ExpectingDTEXT.php b/src/Egulias/EmailValidator/Exception/ExpectingDTEXT.php
new file mode 100644
index 0000000..b175f59
--- /dev/null
+++ b/src/Egulias/EmailValidator/Exception/ExpectingDTEXT.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Egulias\EmailValidator\Exception;
+
+use Egulias\EmailValidator\InvalidEmail;
+
+class ExpectingDTEXT extends InvalidEmail
+{
+    const CODE = 129;
+    const REASON = "Expected DTEXT";
+}
diff --git a/src/Egulias/EmailValidator/InvalidEmail.php b/src/Egulias/EmailValidator/InvalidEmail.php
index 97d0963..24cc587 100644
--- a/src/Egulias/EmailValidator/InvalidEmail.php
+++ b/src/Egulias/EmailValidator/InvalidEmail.php
@@ -2,7 +2,10 @@
 
 namespace Egulias\EmailValidator;
 
-class InvalidEmail extends \InvalidArgumentException
+abstract class InvalidEmail extends \InvalidArgumentException
 {
-
+    public function __construct()
+    {
+        parent::__construct(static::REASON, static::CODE);
+    }
 }
diff --git a/src/Egulias/EmailValidator/Parser/DomainPart.php b/src/Egulias/EmailValidator/Parser/DomainPart.php
index 05664c8..3ce10ae 100644
--- a/src/Egulias/EmailValidator/Parser/DomainPart.php
+++ b/src/Egulias/EmailValidator/Parser/DomainPart.php
@@ -6,6 +6,7 @@ namespace Egulias\EmailValidator\Parser;
 use Egulias\EmailValidator\EmailLexer;
 use Egulias\EmailValidator\Exception\ConsecutiveAt;
 use Egulias\EmailValidator\Exception\DotAtStart;
+use Egulias\EmailValidator\Exception\ExpectingDTEXT;
 use Egulias\EmailValidator\Parser\Parser;
 use Egulias\EmailValidator\EmailValidator;
 
@@ -19,7 +20,7 @@ class DomainPart extends Parser
         $this->lexer->moveNext();
 
         if ($this->lexer->token['type'] === EmailLexer::S_DOT) {
-            throw new DotAtStart('domain');
+            throw new DotAtStart();
         }
 
         if ($this->lexer->token['type'] === EmailLexer::S_EMPTY) {
@@ -160,7 +161,7 @@ class DomainPart extends Parser
         $addressLiteral = '';
         do {
             if ($this->lexer->token['type'] === EmailLexer::C_NUL) {
-                throw new \InvalidArgumentException('ERR_EXPECTING_DTEXT');
+                throw new ExpectingDTEXT();
             }
 
             if ($this->lexer->token['type'] === EmailLexer::INVALID ||
@@ -171,7 +172,7 @@ class DomainPart extends Parser
             }
 
             if ($this->lexer->isNextTokenAny(array(EmailLexer::S_OPENQBRACKET, EmailLexer::S_OPENBRACKET))) {
-                throw new \InvalidArgumentException('ERR_EXPECTING_DTEXT');
+                throw new ExpectingDTEXT();
             }
 
             if ($this->lexer->isNextTokenAny(
diff --git a/src/Egulias/EmailValidator/Parser/LocalPart.php b/src/Egulias/EmailValidator/Parser/LocalPart.php
index d42894f..45a4682 100644
--- a/src/Egulias/EmailValidator/Parser/LocalPart.php
+++ b/src/Egulias/EmailValidator/Parser/LocalPart.php
@@ -17,7 +17,7 @@ class LocalPart extends Parser
         while ($this->lexer->token['type'] !== EmailLexer::S_AT && $this->lexer->token) {
 
             if ($this->lexer->token['type'] === EmailLexer::S_DOT && !$this->lexer->getPrevious()) {
-                throw new DotAtStart('local');
+                throw new DotAtStart();
             }
 
             $closingQuote = $this->checkDQUOTE($closingQuote);
diff --git a/tests/egulias/Tests/EmailValidator/EmailValidatorTest.php b/tests/egulias/Tests/EmailValidator/EmailValidatorTest.php
index 3c751b0..4168847 100644
--- a/tests/egulias/Tests/EmailValidator/EmailValidatorTest.php
+++ b/tests/egulias/Tests/EmailValidator/EmailValidatorTest.php
@@ -5,6 +5,7 @@ namespace Egulias\Tests\EmailValidator;
 use Egulias\EmailValidator\EmailValidator;
 use Egulias\EmailValidator\Exception\ConsecutiveAt;
 use Egulias\EmailValidator\Exception\DotAtStart;
+use Egulias\EmailValidator\Exception\ExpectingDTEXT;
 
 class EmailValidatorTest extends \PHPUnit_Framework_TestCase
 {
@@ -159,7 +160,7 @@ class EmailValidatorTest extends \PHPUnit_Framework_TestCase
             //This was the original. But atext is not allowed after \n
             //array(EmailValidator::ERR_EXPECTING_ATEXT, "exampl\ne@example.co.uk"),
             array(EmailValidator::ERR_ATEXT_AFTER_CFWS, "exampl\ne@example.co.uk"),
-            array(EmailValidator::ERR_EXPECTING_DTEXT, "example@[[]"),
+            array(ExpectingDTEXT::CODE, "example@[[]"),
             array(EmailValidator::ERR_ATEXT_AFTER_CFWS, "exampl\te@example.co.uk"),
             array(EmailValidator::ERR_CR_NO_LF, "example@exa\rmple.co.uk"),
             array(EmailValidator::ERR_CR_NO_LF, "example@[\r]"),