diff --git a/resources/templates/provision/yealink/t42g/y000000000029.cfg b/resources/templates/provision/yealink/t42g/y000000000029.cfg
index 958b1a0b1a..25c21eb3e8 100644
--- a/resources/templates/provision/yealink/t42g/y000000000029.cfg
+++ b/resources/templates/provision/yealink/t42g/y000000000029.cfg
@@ -982,7 +982,7 @@ phone_setting.backlight_time = {$yealink_backlight_time}
 
 wallpaper_upload.url = {$yealink_t42g_wallpaper}
 {if isset($t42g_wallpaper_filename)}
-phone_setting.backgrounds =  Config:{$t42g_wallpaper_filename}
+phone_setting.backgrounds =  Config:{$yealink_t42g_wallpaper_filename}
 {else}
 phone_setting.backgrounds =  Config:yealink_t42g_wallpaper.png
 {/if}