diff --git a/test/lisp/net/dbus-tests.el b/test/lisp/net/dbus-tests.el
index 18e6b09a8de..3d0ab522d3f 100644
--- a/test/lisp/net/dbus-tests.el
+++ b/test/lisp/net/dbus-tests.el
@@ -28,10 +28,6 @@
 (defvar dbus-debug)
 (defvar dbus-message-type-signal)
 (declare-function dbus-get-unique-name "dbusbind.c" (bus))
-(declare-function dbus-close-inhibitor-lock "dbusbind.c" (lock))
-(declare-function dbus-registered-inhibitor-locks "dbusbind.c" ())
-(declare-function dbus-make-inhibitor-lock "dbusbind.c"
-                  (what why &optional block))
 (declare-function dbus--fd-open "dbusbind.c" (filename))
 (declare-function dbus--fd-close "dbusbind.c" (fd))
 (declare-function dbus--registered-fds "dbusbind.c" ())