diff --git a/mystic/mplc.pas b/mystic/mplc.pas
index 9867748..497e858 100644
--- a/mystic/mplc.pas
+++ b/mystic/mplc.pas
@@ -22,6 +22,7 @@
 Program MPLC;
 
 {$I M_OPS.PAS}
+{$MODESWITCH NESTEDPROCVARS-}
 
 Uses
   DOS,