diff --git a/resources/templates/provision/yealink/t56a/y000000000056.cfg b/resources/templates/provision/yealink/t56a/y000000000056.cfg
index 2804d220c2..24b5571e36 100644
--- a/resources/templates/provision/yealink/t56a/y000000000056.cfg
+++ b/resources/templates/provision/yealink/t56a/y000000000056.cfg
@@ -907,8 +907,8 @@ phone_setting.active_backlight_level =
 phone_setting.backlight_time = {$yealink_backlight_time}
 
 wallpaper_upload.url = {$yealink_t56a_wallpaper}
-{if isset($t56a_wallpaper_filename)}
-phone_setting.backgrounds =  Config:{$t56a_wallpaper_filename}
+{if isset($yealink_t56a_wallpaper_filename)}
+phone_setting.backgrounds =  Config:{$yealink_t56a_wallpaper_filename}
 {else}
 phone_setting.backgrounds =  Config:yealink_t56a_wallpaper.png
 {/if}