diff --git a/mystic/install.pas b/mystic/install.pas
index 5bebdfe..3ee8244 100644
--- a/mystic/install.pas
+++ b/mystic/install.pas
@@ -22,6 +22,7 @@
 Program Install;
 
 {$I M_OPS.PAS}
+{$MODESWITCH NESTEDPROCVARS-}
 
 Uses
   m_Strings,