diff --git a/resources/templates/provision/yealink/t22p/{$mac}.cfg b/resources/templates/provision/yealink/t22p/{$mac}.cfg
index a144b0811c..1cc1381b7f 100644
--- a/resources/templates/provision/yealink/t22p/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t22p/{$mac}.cfg
@@ -146,7 +146,11 @@ account.1.srtp_encryption =
 account.1.ptime =
 
 #Assign account 1 as shared line; 0-Disabled (default), 1-BSFT shared line, 2-Draft bridge line appearance;
-account.1.shared_line =
+{if isset($shared_line_1) }
+account.1.shared_line = {$shared_line_1}
+{else}
+account.1.shared_line = 0
+{/if}
 
 #Configure BLA number for account 1 and the subscribe period (in seconds). It ranges from 60 to 7200, the default value is 300.
 account.1.bla_number =