diff --git a/templates/customer/list.html.twig b/templates/customer/list.html.twig
index 6acc07e6..7a5aa28f 100644
--- a/templates/customer/list.html.twig
+++ b/templates/customer/list.html.twig
@@ -139,7 +139,8 @@
 					},
 					{
 						field: 'app_mobile_number',
-						title: 'Registered Number'
+						title: 'Registered Number',
+						sortable: false
 					},
 					{
 						field: 'Actions',