diff --git a/introspection/Makefile.am b/introspection/Makefile.am
index 0c67898d..70143ceb 100644
--- a/introspection/Makefile.am
+++ b/introspection/Makefile.am
@@ -8,6 +8,7 @@ EXTRA_DIST = \
 	org.freedesktop.ModemManager.xml \
 	org.freedesktop.ModemManager.Modem.xml \
 	org.freedesktop.ModemManager.Modem.Cdma.xml \
+	org.freedesktop.ModemManager.Modem.Firmware.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.Card.xml \
 	org.freedesktop.ModemManager.Modem.Gsm.Contacts.xml \