diff --git a/airtime_mvc/application/models/Systemstatus.php b/airtime_mvc/application/models/Systemstatus.php
index 21f24800b..23b86a899 100644
--- a/airtime_mvc/application/models/Systemstatus.php
+++ b/airtime_mvc/application/models/Systemstatus.php
@@ -222,7 +222,7 @@ class Application_Model_Systemstatus
         
         $freeSpace = disk_free_space($storPath);
         $totalSpace = disk_total_space($storPath);
-        Logging::info($totalSpace = $freeSpace);
+        Logging::info($totalSpace - $freeSpace);