diff --git a/introspection/org.freedesktop.ModemManager1.Bearer.xml b/introspection/org.freedesktop.ModemManager1.Bearer.xml
index 6ef4a06c..a21f38c8 100644
--- a/introspection/org.freedesktop.ModemManager1.Bearer.xml
+++ b/introspection/org.freedesktop.ModemManager1.Bearer.xml
@@ -414,7 +414,8 @@
"apn"
The Access Point Name to use in the connection, given as a string
- value (signature "s").
+ value (signature "s"). For 5G NGC, this field
+ contains the Data Network Name (DNN).
"ip-type"