diff --git a/src/js/rulesAssistant.js b/src/js/rulesAssistant.js
index 047aa8bde13a62faff9ddf2482dc9087fa91d949..2b4358a6f44120f6cdd684f89ca750ae7020ac88 100644
--- a/src/js/rulesAssistant.js
+++ b/src/js/rulesAssistant.js
@@ -523,7 +523,7 @@ window.RASummaryCell = function() {
 	/* start loop for row*/
 
 	let tableRows = [];
-	walkObject(setters[0], (obj, path) => {
+	walkObject(emptyDefaultRule().set, (obj, path) => {
 		addRow(path, collectMemberFromObjects(setters, path), tableRows);
 	}, []);