diff --git a/resources/templates/provision/yealink/t48g/y000000000035.cfg b/resources/templates/provision/yealink/t48g/y000000000035.cfg
index b682ff620a..e2d7e35cee 100644
--- a/resources/templates/provision/yealink/t48g/y000000000035.cfg
+++ b/resources/templates/provision/yealink/t48g/y000000000035.cfg
@@ -980,8 +980,8 @@ phone_setting.backlight_time = {$yealink_backlight_time}
 ##                                   Wallpaper                                       ##
 #######################################################################################
 wallpaper_upload.url = {$yealink_t48g_wallpaper}
-{if isset($t48_wallpaper_filename)}
-phone_setting.backgrounds =  Config:{$t48g_wallpaper_filename}
+{if isset($yealink_t48_wallpaper_filename)}
+phone_setting.backgrounds =  Config:{$yealink_t48g_wallpaper_filename}
 {else}
 phone_setting.backgrounds =  Config:yealink_t48g_wallpaper.png
 {/if}