diff --git a/repo-installer/instgen.lua b/repo-installer/instgen.lua
index 8995894..90e5871 100644
--- a/repo-installer/instgen.lua
+++ b/repo-installer/instgen.lua
@@ -69,6 +69,12 @@ wget(src,pcfgname)
 local programs = parsecfg(pcfgname)
 os.execute("rm '"..pcfgname.."'")
 
+if tArgs[3] then
+ for k,v in pairs(programs) do
+  if not filter[k] then programs[k] = nil end
+ end
+end
+
 local dlfiles = {}
 for k,v in pairs(programs) do
  for l,m in pairs(v.files or {}) do