diff --git a/lib/SimpleSAML/Locale/Localization.php b/lib/SimpleSAML/Locale/Localization.php
index 02201a01cfc44ade9b2fc0ae0ddcd770b43a2513..fc307aa16ee8ad62d7d81e374e715719587ccfcb 100644
--- a/lib/SimpleSAML/Locale/Localization.php
+++ b/lib/SimpleSAML/Locale/Localization.php
@@ -25,7 +25,7 @@ class Localization
     /**
      * The default gettext domain.
      */
-    const DEFAULT_DOMAIN = 'ssp';
+    const DEFAULT_DOMAIN = 'messages';
 
     /**
      * Old internationalization backend included in SimpleSAMLphp.
diff --git a/tests/lib/SimpleSAML/Locale/LocalizationTest.php b/tests/lib/SimpleSAML/Locale/LocalizationTest.php
index df00ff0c085024c79d5713366b6e946a16fdeaba..7f7d4fa6ff869128fbad8de549fcbb5cf488d2a1 100644
--- a/tests/lib/SimpleSAML/Locale/LocalizationTest.php
+++ b/tests/lib/SimpleSAML/Locale/LocalizationTest.php
@@ -19,7 +19,7 @@ class LocalizationTest extends \PHPUnit_Framework_TestCase
         );
         $l = new Localization($c);
         $this->assertTrue($l->isI18NBackendDefault());
-        $this->assertEquals(Localization::DEFAULT_DOMAIN, 'ssp');
+        $this->assertEquals(Localization::DEFAULT_DOMAIN, 'messages');
         $this->assertEquals($l->getCurrentDomain(), Localization::DEFAULT_DOMAIN);
     }