diff --git a/install/upgrades/airtime-1.9.0/airtime-upgrade.php b/install/upgrades/airtime-1.9.0/airtime-upgrade.php
index caf8da4a3..bd3952112 100644
--- a/install/upgrades/airtime-1.9.0/airtime-upgrade.php
+++ b/install/upgrades/airtime-1.9.0/airtime-upgrade.php
@@ -78,6 +78,8 @@ function updateAirtimeImportSymLink(){
 }
 
 function execSqlQuery($sqlString){
+    global $CC_DBC;
+
     $result = $CC_DBC->query($sql);
     echo $sql.PHP_EOL;
     if (PEAR::isError($result)) {