Index: generic/tclAPI.h
===================================================================
diff -u -r87c6a11296ada89c007cc2ed33df6887ac53c740 -rc217b55f7a8da19973a49665570c25b62c468509
--- generic/tclAPI.h	(.../tclAPI.h)	(revision 87c6a11296ada89c007cc2ed33df6887ac53c740)
+++ generic/tclAPI.h	(.../tclAPI.h)	(revision c217b55f7a8da19973a49665570c25b62c468509)
@@ -2249,7 +2249,7 @@
 {"::nsf::setter", NsfSetterCmdStub, 3, {
   {"object", NSF_ARG_REQUIRED, 0, ConvertToObject},
   {"-per-object", 0, 0, ConvertToString},
-  {"parameter", 0, 0, ConvertToTclobj}}
+  {"parameter", NSF_ARG_REQUIRED, 0, ConvertToTclobj}}
 },
 {"::nsf::__db_show_stack", NsfShowStackCmdStub, 0, {
   }