diff --git a/resources/templates/provision/yealink/t49g/y000000000051.cfg b/resources/templates/provision/yealink/t49g/y000000000051.cfg
index cd19dddd68..2d8c2ad9f4 100644
--- a/resources/templates/provision/yealink/t49g/y000000000051.cfg
+++ b/resources/templates/provision/yealink/t49g/y000000000051.cfg
@@ -940,8 +940,8 @@ phone_setting.backlight_time = {$yealink_backlight_time}
 ##                                   Wallpaper                                       ##
 #######################################################################################
 wallpaper_upload.url = {$yealink_t49g_wallpaper}
-{if isset($t49g_wallpaper_filename)}
-phone_setting.backgrounds =  Config:{$t49g_wallpaper_filename}
+{if isset($yealink_t49g_wallpaper_filename)}
+phone_setting.backgrounds =  Config:{$yealink_t49g_wallpaper_filename}
 {else}
 phone_setting.backgrounds =  Config:yealink_t49g_wallpaper.png
 {/if}