diff --git a/Lib/CakeMigration.php b/Lib/CakeMigration.php
index 441bd579..207beed7 100644
--- a/Lib/CakeMigration.php
+++ b/Lib/CakeMigration.php
@@ -396,7 +396,7 @@ protected function _alterTable($type, $tables) {
 							));
 							break;
 						case 'change':
-							if (!isset($col['type'])) {
+							if (!isset($col['type']) || $col['type'] == $tableFields[$field]['type']) {
 								$def = array_merge($tableFields[$field], $col);
 							} else {
 								$def = $col;