diff --git a/utils/pas2js/makestub.lpi b/utils/pas2js/makestub.lpi
index 6d5db4e64b..5266885de3 100644
--- a/utils/pas2js/makestub.lpi
+++ b/utils/pas2js/makestub.lpi
@@ -23,6 +23,9 @@
       <Version Value="2"/>
     </PublishOptions>
     <RunParams>
+      <local>
+        <CommandLineParams Value="--input=&quot;$HOME/source/pas2js/src/rtl/web.pas -S2h&quot; --no-externalclass --no-implementation --no-externalvar --no-externalfunction -x jstypes -o web.pp"/>
+      </local>
       <FormatVersion Value="2"/>
       <Modes Count="1">
         <Mode0 Name="default">
diff --git a/utils/pas2js/stubcreator.pp b/utils/pas2js/stubcreator.pp
index 68cfd22c83..bfe5935d6a 100644
--- a/utils/pas2js/stubcreator.pp
+++ b/utils/pas2js/stubcreator.pp
@@ -302,7 +302,7 @@ begin
       FileResolver.AddIncludePath(S);
     // Scanner
     Scanner := TPascalScanner.Create(FileResolver);
-    Scanner.Options:=[po_AsmWhole,po_KeepClassForward];
+    Scanner.Options:=[po_AsmWhole,po_KeepClassForward,po_ExtConstWithoutExpr];
     SCanner.LogEvents:=SE.ScannerLogEvents;
     SCanner.OnLog:=SE.Onlog;
     For S in FDefines do
@@ -312,7 +312,7 @@ begin
     Parser:=TPasParser.Create(Scanner, FileResolver, SE);
     Parser.LogEvents:=SE.ParserLogEvents;
     Parser.OnLog:=SE.Onlog;
-    Parser.Options:=Parser.Options+[po_AsmWhole,po_delphi,po_KeepClassForward];
+    Parser.Options:=Parser.Options+[po_AsmWhole,po_delphi,po_KeepClassForward,po_ExtConstWithoutExpr,po_AsyncProcs];
     Parser.ParseMain(Result);
   finally
     Parser.Free;