diff --git a/hwe/sammo/Event/Action/RandomizeCityTradeRate.php b/hwe/sammo/Event/Action/RandomizeCityTradeRate.php
index 32fec945..99e12a3d 100644
--- a/hwe/sammo/Event/Action/RandomizeCityTradeRate.php
+++ b/hwe/sammo/Event/Action/RandomizeCityTradeRate.php
@@ -2,7 +2,7 @@
 
 namespace sammo\Event\Action;
 
-use DB;
+use sammo\DB;
 use sammo\LiteHashDRBG;
 use sammo\RandUtil;
 use sammo\UniqueConst;