diff --git a/dezem.yml b/dezem.yml
index 9b40b35..57538a1 100644
--- a/dezem.yml
+++ b/dezem.yml
@@ -24,3 +24,4 @@ field-mask:
   - up.uplink_message.rx_metadata
   - up.uplink_message.settings.data_rate.modulation.lora.spreading_factor
   - up.uplink_message.frm_payload
+  - up.uplink_message.f_port