diff --git a/resources/templates/provision/yealink/t42g/y000000000029.cfg b/resources/templates/provision/yealink/t42g/y000000000029.cfg
index 25c21eb3e8..6c2abf273c 100644
--- a/resources/templates/provision/yealink/t42g/y000000000029.cfg
+++ b/resources/templates/provision/yealink/t42g/y000000000029.cfg
@@ -981,7 +981,7 @@ phone_setting.backlight_time = {$yealink_backlight_time}
 #######################################################################################
 
 wallpaper_upload.url = {$yealink_t42g_wallpaper}
-{if isset($t42g_wallpaper_filename)}
+{if isset($yealink_t42g_wallpaper_filename)}
 phone_setting.backgrounds =  Config:{$yealink_t42g_wallpaper_filename}
 {else}
 phone_setting.backgrounds =  Config:yealink_t42g_wallpaper.png