diff --git a/install.php b/install.php
index 6ccbb8bc..81bdfc1c 100644
--- a/install.php
+++ b/install.php
@@ -119,20 +119,20 @@
 				}
 			case 'v0.9.3-dev-10':
 			case 'v0.9.3':
-				query("ALTER TABLE  `bans` DROP INDEX `id`") or error(db_error());
-				query("ALTER TABLE  `pms` DROP INDEX  `id`") or error(db_error());
-				query("ALTER TABLE  `boards` DROP PRIMARY KEY") or error(db_error());
-				query("ALTER TABLE  `reports` DROP INDEX  `id`") or error(db_error());
-				query("ALTER TABLE  `boards` DROP INDEX `uri`") or error(db_error());
+				query("ALTER TABLE  `bans` DROP INDEX `id`");
+				query("ALTER TABLE  `pms` DROP INDEX  `id`");
+				query("ALTER TABLE  `boards` DROP PRIMARY KEY");
+				query("ALTER TABLE  `reports` DROP INDEX  `id`");
+				query("ALTER TABLE  `boards` DROP INDEX `uri`");
 				
-				query("ALTER IGNORE TABLE  `robot` ADD PRIMARY KEY (`hash`)") or error(db_error());
-				query("ALTER TABLE  `bans` ADD FULLTEXT (`ip`)") or error(db_error());
-				query("ALTER TABLE  `ip_notes` ADD INDEX (`ip`)") or error(db_error());				
-				query("ALTER TABLE  `modlogs` ADD INDEX (`time`)") or error(db_error());
-				query("ALTER TABLE  `boards` ADD PRIMARY KEY(`uri`)") or error(db_error());
-				query("ALTER TABLE  `mutes` ADD INDEX (`ip`)") or error(db_error());
-				query("ALTER TABLE  `news` ADD INDEX (`time`)") or error(db_error());
-				query("ALTER TABLE  `theme_settings` ADD INDEX (`theme`)") or error(db_error());
+				query("ALTER IGNORE TABLE  `robot` ADD PRIMARY KEY (`hash`)");
+				query("ALTER TABLE  `bans` ADD FULLTEXT (`ip`)");
+				query("ALTER TABLE  `ip_notes` ADD INDEX (`ip`)");	
+				query("ALTER TABLE  `modlogs` ADD INDEX (`time`)");
+				query("ALTER TABLE  `boards` ADD PRIMARY KEY(`uri`)");
+				query("ALTER TABLE  `mutes` ADD INDEX (`ip`)");
+				query("ALTER TABLE  `news` ADD INDEX (`time`)");
+				query("ALTER TABLE  `theme_settings` ADD INDEX (`theme`)");
 			case 'v0.9.4-dev-1':
 				foreach($boards as &$board) {
 					query(sprintf("ALTER TABLE  `posts_%s` ADD  `sage` INT( 1 ) NOT NULL AFTER  `locked`", $board['uri'])) or error(db_error());