diff --git a/compiler/pp.pas b/compiler/pp.pas
index e6e52f1ba0..9349845924 100644
--- a/compiler/pp.pas
+++ b/compiler/pp.pas
@@ -154,7 +154,7 @@ program pp;
     {$MAXSTACKSIZE 512000000}
   {$else win64}
     { 1 MB stack }
-    {$STACKSIZE 1000000}
+    {$MINSTACKSIZE 1000000}
   {$endif win64}
 {$endif win32}