diff --git a/admin/common.php b/admin/common.php
index ee99f23..4e2947b 100644
--- a/admin/common.php
+++ b/admin/common.php
@@ -168,7 +168,7 @@ function exec_uploaddatabase($dbname, $key)
 {
     global $sqlitecloud;
     $sqlitecloud = do_check_connect();
-    $command = ($key) ? "UPLOAD DATABASE '${dbname}' KEY '{$key}';" : "UPLOAD DATABASE '{$dbname}';";
+    $command = ($key) ? "UPLOAD DATABASE '{$dbname}' KEY '{$key}';" : "UPLOAD DATABASE '{$dbname}';";
     return $sqlitecloud->execute($command);
 }