diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
index bcf7a8d..38e4ccf 100644
--- a/system/database/DB_forge.php
+++ b/system/database/DB_forge.php
@@ -809,6 +809,7 @@
 						$field['length'] = is_array($attributes['CONSTRAINT'])
 							? "('".implode("','", $attributes['CONSTRAINT'])."')"
 							: '('.$attributes['CONSTRAINT'].')';
+						break;
 					default:
 						$field['length'] = is_array($attributes['CONSTRAINT'])
 							? '('.implode(',', $attributes['CONSTRAINT']).')'
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 0a80888..31d7330 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -208,11 +208,12 @@
 		// If the field label wasn't passed we use the field name
 		$label = ($label === '') ? $field : $label;
 
+		$indexes = array();
+
 		// Is the field name an array? If it is an array, we break it apart
 		// into its components so that we can fetch the corresponding POST data later
 		if (($is_array = (bool) preg_match_all('/\[(.*?)\]/', $field, $matches)) === TRUE)
 		{
-			$indexes = array();
 			sscanf($field, '%[^[][', $indexes[0]);
 
 			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)