diff --git a/Makefile.am b/Makefile.am
index 0b46a128a7..21097bf6ba 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5053,6 +5053,7 @@ libsystemd_machine_core_la_SOURCES = \
 	src/machine/machine.h \
 	src/machine/machined-dbus.c \
 	src/machine/machine-dbus.c \
+	src/machine/machine-dbus.h \
 	src/machine/image-dbus.c \
 	src/machine/image-dbus.h