Index: generic/nsf.c
===================================================================
diff -u -rc2e57257a55ea1fdc5306679e58da336c1bc3a5a -r0b1ac7f47948c36c4e03fc3d6dbce0a04d9418d4
--- generic/nsf.c	(.../nsf.c)	(revision c2e57257a55ea1fdc5306679e58da336c1bc3a5a)
+++ generic/nsf.c	(.../nsf.c)	(revision 0b1ac7f47948c36c4e03fc3d6dbce0a04d9418d4)
@@ -22275,7 +22275,7 @@
     }
   case InfomethodsubcmdExistsIdx:
     {
-      Tcl_SetObjResult(interp, Tcl_NewIntObj(1));
+      Tcl_SetObjResult(interp, Tcl_NewIntObj(!CmdIsNsfObject(cmd)));
       return TCL_OK;
     }
   case InfomethodsubcmdArgsIdx: