diff --git a/phpBB/phpbb/profilefields/type/type_string.php b/phpBB/phpbb/profilefields/type/type_string.php
index 84469749f1..e477ff4ea7 100644
--- a/phpBB/phpbb/profilefields/type/type_string.php
+++ b/phpBB/phpbb/profilefields/type/type_string.php
@@ -64,6 +64,6 @@ class type_string extends type_string_common implements type_interface
 	*/
 	public function validate_profile_field(&$field_value, $field_data)
 	{
-		return $this->validate_string_profile_field('string', &$field_value, $field_data);
+		return $this->validate_string_profile_field('string', $field_value, $field_data);
 	}
 }
diff --git a/phpBB/phpbb/profilefields/type/type_text.php b/phpBB/phpbb/profilefields/type/type_text.php
index 2f8fcb12f5..f8377015aa 100644
--- a/phpBB/phpbb/profilefields/type/type_text.php
+++ b/phpBB/phpbb/profilefields/type/type_text.php
@@ -64,6 +64,6 @@ class type_text extends type_string_common implements type_interface
 	*/
 	public function validate_profile_field(&$field_value, $field_data)
 	{
-		return $this->validate_string_profile_field('text', &$field_value, $field_data);
+		return $this->validate_string_profile_field('text', $field_value, $field_data);
 	}
 }