diff --git a/admin/include/image.class.php b/admin/include/image.class.php
index e713a84c9..f91d93413 100644
--- a/admin/include/image.class.php
+++ b/admin/include/image.class.php
@@ -301,10 +301,9 @@ class pwg_image
 
     for ($i=0; $i<3; $i++)
     {
-      $line = & $matrix[$i];
       for ($j=0; $j<3; $j++)
       {
-        $line[$j] /= $norm;
+        $matrix[$i][$j] /= $norm;
       }
     }