diff --git a/Configuration/TCA/Overrides/fe_users.php b/Configuration/TCA/Overrides/fe_users.php
new file mode 100644
index 0000000..e328396
--- /dev/null
+++ b/Configuration/TCA/Overrides/fe_users.php
@@ -0,0 +1,7 @@
+<?php
+defined('TYPO3_MODE') or die();
+
+// Modifications on existing columns:
+if ($GLOBALS['TCA']['fe_users']['columns']['email']['config']['size'] < 40) {
+    $GLOBALS['TCA']['fe_users']['columns']['email']['config']['size'] = 255;
+}