diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
index 27f2c37..a71fca7 100644
--- a/system/database/DB_forge.php
+++ b/system/database/DB_forge.php
@@ -99,7 +99,7 @@
 	{
 		if (is_array($key))
 		{
-			foreach($key as $one)
+			foreach ($key as $one)
 			{
 				$this->add_key($one, $primary);
 			}