Fix a syntax error
diff --git a/system/database/drivers/sqlite/sqlite_forge.php b/system/database/drivers/sqlite/sqlite_forge.php
index f8cfdf3..25f4bf7 100644
--- a/system/database/drivers/sqlite/sqlite_forge.php
+++ b/system/database/drivers/sqlite/sqlite_forge.php
@@ -145,7 +145,7 @@
 			{
 				$key = is_array($key)
 					? $this->db->escape_identifiers($key)
-					: array($this->db->escape_identifiers($key);
+					: array($this->db->escape_identifiers($key));
 
 				$sql .= ",\n\tUNIQUE (".implode(', ', $key).')';
 			}