diff --git a/resources/templates/provision/yealink/t40g/y000000000000.boot b/resources/templates/provision/yealink/t40g/y000000000000.boot
index 05b0fdf57d..d0d77229fd 100644
--- a/resources/templates/provision/yealink/t40g/y000000000000.boot
+++ b/resources/templates/provision/yealink/t40g/y000000000000.boot
@@ -1,4 +1,7 @@
 #!version:1.0.0.1
 ## The header above must appear as-is in the first line
 
-#overwrite_mode = 1
\ No newline at end of file
+include:config "y000000000076.cfg"
+include:config "{$mac}.cfg"
+
+overwrite_mode = {$yealink_overwrite_mode}