Index: ext/dbm/extconf.rb
--- ext/dbm/extconf.rb.orig	2007-02-13 00:01:19 +0100
+++ ext/dbm/extconf.rb	2007-03-13 08:11:50 +0100
@@ -5,7 +5,7 @@
 if dblib = with_config("dbm-type", nil)
   dblib = dblib.split(/[ ,]+/)
 else
-  dblib = %w(db db2 db1 dbm gdbm gdbm_compat qdbm)
+  dblib = %w(dbm db2 db1 db gdbm gdbm_compat qdbm)
 end
 
 headers = {