diff --git a/src/init/setupVars.tw b/src/init/setupVars.tw
index 51443ae5e55b67e28e7fa0e09d12c8ee0419a46d..1418b7055b2627ca501f5cfb9200b4d1cba35233 100644
--- a/src/init/setupVars.tw
+++ b/src/init/setupVars.tw
@@ -43,6 +43,8 @@
 }>>
 /* END Custom Nationalities region filter */
 
+<<set setup.summaryCache = {}>>
+
 /*** pregmod exclusive end ***/
 
 /* Nationality-to-race weighted objects */