diff --git a/compiler/nbas.pas b/compiler/nbas.pas
index a09e511bbe..39f84c03f8 100644
--- a/compiler/nbas.pas
+++ b/compiler/nbas.pas
@@ -1226,8 +1226,8 @@ implementation
         for f in tempinfo^.flags do
           begin
             if notfirst then
-              write(',');
-            write(f);
+              write(t,',');
+            write(t,f);
             notfirst:=true;
           end;
         writeln(t,'])');