diff --git a/dbus/dbus-pipe-unix.c b/dbus/dbus-pipe-unix.c
index f35024b..b7dfa78 100644
--- a/dbus/dbus-pipe-unix.c
+++ b/dbus/dbus-pipe-unix.c
@@ -65,13 +65,13 @@ _dbus_pipe_write (DBusPipe         *pipe,
  *
  * @param pipe the pipe instance
  * @param error return location for an error
- * @returns #FALSE if error is set
+ * @returns -1 if error is set
  */
 int
 _dbus_pipe_close  (DBusPipe         *pipe,
                    DBusError        *error)
 {
-  if (_dbus_close (pipe->fd_or_handle, error) < 0)
+  if (!_dbus_close (pipe->fd_or_handle, error))
     {
       return -1;
     }