diff --git a/introspection/org.freedesktop.ModemManager1.Modem.xml b/introspection/org.freedesktop.ModemManager1.Modem.xml
index d189474c..a2408b4a 100644
--- a/introspection/org.freedesktop.ModemManager1.Modem.xml
+++ b/introspection/org.freedesktop.ModemManager1.Modem.xml
@@ -922,7 +922,7 @@
         In Linux for example, this points to a sysfs path of the usb_device
         object.
 
-        This value may also be set by the user using the MM_ID_PHYSDEV_UID udev
+        This value may also be set by the user using the ID_MM_PHYSDEV_UID udev
         tag (e.g. binding the tag to a specific sysfs path).
 
         Since: 1.0