diff --git a/src/Records/TypeDefinitions/TypeDefinitionManager.php b/src/Records/TypeDefinitions/TypeDefinitionManager.php
index be4da0a..8420c2c 100644
--- a/src/Records/TypeDefinitions/TypeDefinitionManager.php
+++ b/src/Records/TypeDefinitions/TypeDefinitionManager.php
@@ -222,7 +222,7 @@ private function setDefinitions()
                 'priority' => Types::SHORT,
                 'weight'   => Types::SHORT,
                 'port'     => Types::SHORT,
-                'name'     => Types::DOMAIN_NAME | DomainName::FLAG_NO_COMPRESSION,
+                'name'     => Types::DOMAIN_NAME | (DomainName::FLAG_NO_COMPRESSION << 16),
             ],
             ResourceTypes::TXT => [ // RFC 1035
                 'txtdata+' => Types::CHARACTER_STRING,
diff --git a/src/Records/Types/DomainName.php b/src/Records/Types/DomainName.php
index 5247c27..1600fd6 100644
--- a/src/Records/Types/DomainName.php
+++ b/src/Records/Types/DomainName.php
@@ -22,7 +22,7 @@
  */
 class DomainName extends Type
 {
-    const FLAG_NO_COMPRESSION = 0x80000000;
+    const FLAG_NO_COMPRESSION = 0x8000;
 
     /**
      * @var string
diff --git a/src/Records/Types/Long.php b/src/Records/Types/Long.php
index 5ba9361..c67afe2 100644
--- a/src/Records/Types/Long.php
+++ b/src/Records/Types/Long.php
@@ -38,10 +38,12 @@ public function setValue($value)
     {
         $value = (int)$value;
 
-        if ($value < 0) {
-            throw new \UnderflowException('Long integer value must be in the range 0 - 4294967296');
-        } else if ($value > 0xffffffff) {
-            throw new \OverflowException('Long integer value must be in the range 0 - 4294967296');
+        if (4 !== \PHP_INT_SIZE) {
+            if ($value < 0) {
+                throw new \UnderflowException('Long integer value must be in the range 0 - 4294967296');
+            } else if ($value > 0xffffffff) {
+                throw new \OverflowException('Long integer value must be in the range 0 - 4294967296');
+            }
         }
 
         $this->value = $value;