diff --git a/library/tiqr/Tiqr/UserStorage/Pdo.php b/library/tiqr/Tiqr/UserStorage/Pdo.php
index 4ccb55f..9227d9b 100644
--- a/library/tiqr/Tiqr/UserStorage/Pdo.php
+++ b/library/tiqr/Tiqr/UserStorage/Pdo.php
@@ -28,7 +28,7 @@
     tmpblockattempts integer,   // Number of failed login attempts counting towards a temporary block
     blocked tinyint(1),         // used as boolean: 0=not blocked. 1=blocked
     notificationtype varchar(10),
-    notificationaddress varchar(64)
+    notificationaddress varchar(256)
 );
 
  *
diff --git a/library/tiqr/tests/Tiqr_UserStorageTest.php b/library/tiqr/tests/Tiqr_UserStorageTest.php
index 1ab1288..03981ee 100644
--- a/library/tiqr/tests/Tiqr_UserStorageTest.php
+++ b/library/tiqr/tests/Tiqr_UserStorageTest.php
@@ -147,7 +147,7 @@ function testUserStorage_Pdo_combined() {
                                                 tmpblockattempts INTEGER,
                                                 blocked INTEGER,
                                                 notificationtype VARCHAR(10),
-                                                notificationaddress VARCHAR(64)
+                                                notificationaddress VARCHAR(256)
                                             );
 SQL
         ) );
@@ -199,7 +199,7 @@ function testUserStorage_Pdo_split() {
                                                 tmpblockattempts INTEGER,
                                                 blocked INTEGER,
                                                 notificationtype VARCHAR(10),
-                                                notificationaddress VARCHAR(64)
+                                                notificationaddress VARCHAR(256)
                                             );
 SQL
             ) );