Index: irssi/src/lib-config/write.c
===================================================================
--- irssi/src/lib-config/write.c	(revision 5094)
+++ irssi/src/lib-config/write.c	(working copy)
@@ -314,6 +314,7 @@
 
 	rec->handle = g_io_channel_unix_new(fd);
 	g_io_channel_set_encoding(rec->handle, NULL, NULL);
+	g_io_channel_set_close_on_unref(rec->handle, TRUE);
 	rec->tmp_indent_level = 0;
 	rec->tmp_last_lf = TRUE;
         ret = config_write_block(rec, rec->mainnode, FALSE, TRUE);