1 files changed, 6 insertions, 2 deletions
diff --git a/src/libstore/db.hh b/src/libstore/db.hh
index dd7d76b8cebb..0315728de597 100644
--- a/src/libstore/db.hh
+++ b/src/libstore/db.hh
@@ -5,13 +5,17 @@
 #include <list>
 #include <map>
 
-#include <db_cxx.h>
-
 #include "util.hh"
 
 using namespace std;
 
 
+/* Defined externally. */
+class DbTxn;
+class DbEnv;
+class Db;
+
+
 class Database;