diff --git a/install_minimal/upgrades/airtime-2.1.0/DbUpgrade.php b/install_minimal/upgrades/airtime-2.1.0/DbUpgrade.php
index 5d5c5d568..7d306ab06 100644
--- a/install_minimal/upgrades/airtime-2.1.0/DbUpgrade.php
+++ b/install_minimal/upgrades/airtime-2.1.0/DbUpgrade.php
@@ -11,7 +11,7 @@ class AirtimeDatabaseUpgrade{
     }
 
     private static function task0(){
-        UpgradeCommon::MigrateTablesToVersion(__DIR__, '20120410134819');
+        UpgradeCommon::MigrateTablesToVersion(__DIR__, '20120410104441');
         $sql = "INSERT INTO cc_pref(\"keystr\", \"valstr\") VALUES('scheduled_play_switch', 'on')";
         UpgradeCommon::nonSelectQueryDb($sql);
     }
diff --git a/install_minimal/upgrades/airtime-2.1.0/common/Version20120410104441.php b/install_minimal/upgrades/airtime-2.1.0/common/Version20120410104441.php
index 1db3b6b07..889293aca 100644
--- a/install_minimal/upgrades/airtime-2.1.0/common/Version20120410104441.php
+++ b/install_minimal/upgrades/airtime-2.1.0/common/Version20120410104441.php
@@ -9,10 +9,18 @@ class Version20120410104441 extends AbstractMigration
 {
     public function up(Schema $schema)
     {
-        //add temp columns for changing bitrate and sample rate to integers.
-        $cc_files = $schema->getTable('cc_files');
-        $cc_files->addColumn('temp_br', 'integer', array('notnull' => 0));
-        $cc_files->addColumn('temp_sr', 'integer', array('notnull' => 0));
+        //add temp columns for changing bitrate and sample rate to integers.
+        $this->_addSql("ALTER TABLE cc_files ADD temp_br integer");
+        $this->_addSql("ALTER TABLE cc_files ADD temp_sr integer");
+        
+        $this->_addSql("UPDATE cc_files SET temp_br = bit_rate::integer");
+        $this->_addSql("UPDATE cc_files SET temp_sr = sample_rate::integer");
+        
+        $this->_addSql("ALTER TABLE cc_files DROP COLUMN sample_rate");
+        $this->_addSql("ALTER TABLE cc_files DROP COLUMN bit_rate");
+        
+        $this->_addSql("ALTER TABLE cc_files RENAME COLUMN temp_sr TO sample_rate");
+        $this->_addSql("ALTER TABLE cc_files RENAME COLUMN temp_br TO bit_rate");
     }
     
     public function down(Schema $schema)
diff --git a/install_minimal/upgrades/airtime-2.1.0/common/Version20120410134819.php b/install_minimal/upgrades/airtime-2.1.0/common/Version20120410134819.php
deleted file mode 100644
index 1ca394d1f..000000000
--- a/install_minimal/upgrades/airtime-2.1.0/common/Version20120410134819.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-
-namespace DoctrineMigrations;
-
-use Doctrine\DBAL\Migrations\AbstractMigration,
-    Doctrine\DBAL\Schema\Schema;
-
-class Version20120410134819 extends AbstractMigration
-{
-    public function up(Schema $schema)
-    {
-        $this->_addSql("UPDATE cc_files SET temp_br = bit_rate::integer");
-        $this->_addSql("UPDATE cc_files SET temp_sr = sample_rate::integer");
-        
-        $cc_files = $schema->getTable('cc_files');
-        $cc_files->dropColumn('bit_rate');
-        $cc_files->dropColumn('sample_rate');
-        
-        $cc_files->renameColumn('temp_br', 'bit_rate');
-        $cc_files->renameColumn('temp_sr', 'sample_rate');
-    }
-
-    public function down(Schema $schema)
-    {
-
-    }
-}
\ No newline at end of file