diff --git a/scripts/target_config.lua b/scripts/target_config.lua
index 249f3e5b..fa831f08 100755
--- a/scripts/target_config.lua
+++ b/scripts/target_config.lua
@@ -15,11 +15,12 @@ local output = {}
 
 for config in pairs(lib.configs) do
 	table.insert(output, config)
-	io.stderr:write(config, "\n")
+	io.stderr:write(string.format("target_config.lua:config# %s\n", config))
 end
 
 -- The sort will make =y entries override =m ones
 table.sort(output)
+io.stderr:write("target_config.lua: outputting openwrt-config ...\n")
 for _, line in ipairs(output) do
 	io.stdout:write(line, '\n')
 end
diff --git a/scripts/target_lib.lua b/scripts/target_lib.lua
index a0319254..7808ad9f 100644
--- a/scripts/target_lib.lua
+++ b/scripts/target_lib.lua
@@ -152,19 +152,19 @@ end
 
 function F.config(...)
 	local arg = {...}
-	io.stderr:write(string.format("config: %s; %i\n", ... , #arg))
+	io.stderr:write(string.format("target_lib.lua:config# %s; %i\n", ... , #arg))
 	M.configs[string.format(...)] = 2
 end
 
 function F.config_m(...)
 	local arg = {...}
-	io.stderr:write(string.format("config_m: %s; %i\n", ... , #arg))
+	io.stderr:write(string.format("target_lib.lua:config_m# %s; %i\n", ... , #arg))
 	M.configs[string.format(...)] = 2
 end
 
 function F.packages(pkgs)
 	for _, pkg in ipairs(pkgs) do
-		io.stderr:write("packages: " .. pkg .. "\n")
+		io.stderr:write("target_lib.lua:packages# " .. pkg .. "\n")
 		table.insert(M.target_packages, pkg)
 	end
 end