diff --git a/juniper-macros.j2 b/juniper-macros.j2
index a8b4350..e85ec85 100644
--- a/juniper-macros.j2
+++ b/juniper-macros.j2
@@ -312,7 +312,7 @@ routing-options {
         collector {{ collector }};
 {% endfor %}
 {% for interface in device['config_context']['sflow']['interfaces'] %}
-        interface {{ interface }};
+        interface {{ interface }}.0;
 {% endfor %}
     }
 {% endif %}