--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1016,6 +1016,8 @@ if(UNIX AND HAVE_DBUS)
   list(APPEND HEADERS ${CMAKE_CURRENT_BINARY_DIR}/dbus/avahientrygroup.h)
   list(APPEND SOURCES ${CMAKE_CURRENT_BINARY_DIR}/dbus/avahientrygroup.cpp)
 
+  set_source_files_properties( dbus/org.freedesktop.UDisks.xml dbus/org.freedesktop.UDisks.Device.xml PROPERTIES NO_NAMESPACE TRUE)
+
   if(HAVE_UDISKS2)
       set_source_files_properties(dbus/org.freedesktop.DBus.ObjectManager.xml
           PROPERTIES NO_NAMESPACE dbus/objectmanager INCLUDE dbus/metatypes.h)