diff --git a/servers/slapd/back-bdb/idl.c b/servers/slapd/back-bdb/idl.c
index b63b9da5b4..d3538177fa 100644
--- a/servers/slapd/back-bdb/idl.c
+++ b/servers/slapd/back-bdb/idl.c
@@ -251,7 +251,7 @@ bdb_idl_fetch_key(
 #ifdef BDB_IDL_MULTI
 	{
 		DBC *cursor;
-		ID buf[BDB_IDL_DB_SIZE];
+		ID buf[BDB_PAGESIZE*4];
 		ID *i;
 		void *ptr;
 		size_t len;