diff --git a/native/MainPage.qml b/native/MainPage.qml
index 09f918d..4f7a33b 100644
--- a/native/MainPage.qml
+++ b/native/MainPage.qml
@@ -185,12 +185,19 @@ Rectangle {
         filteredApiDataModel.clear()
         for (var i = 0; i < apiDataModel.count; ++i) {
             var item = apiDataModel.get(i)
-            if (item.name.toLowerCase().indexOf(searchText.toLowerCase()) !== -1 ||
-                item.key.toLowerCase().indexOf(searchText.toLowerCase()) !== -1 ||
-                item.amount.toLowerCase().indexOf(searchText.toLowerCase()) !== -1 ||
-                item.start.toLowerCase().indexOf(searchText.toLowerCase()) !== -1 ||
-                item.end.toLowerCase().indexOf(searchText.toLowerCase()) !== -1 ||
-                item.group.toLowerCase().indexOf(searchText.toLowerCase()) !== -1) {
+            var name = item.name ? item.name.toString().toLowerCase() : ""
+            var key = item.key ? item.key.toString().toLowerCase() : ""
+            var amount = item.amount ? item.amount.toString().toLowerCase() : ""
+            var start = item.start ? item.start.toString().toLowerCase() : ""
+            var end = item.end ? item.end.toString().toLowerCase() : ""
+            var group = item.group ? item.group.toString().toLowerCase() : ""
+
+            if (name.indexOf(searchText.toLowerCase()) !== -1 ||
+                key.indexOf(searchText.toLowerCase()) !== -1 ||
+                amount.indexOf(searchText.toLowerCase()) !== -1 ||
+                start.indexOf(searchText.toLowerCase()) !== -1 ||
+                end.indexOf(searchText.toLowerCase()) !== -1 ||
+                group.indexOf(searchText.toLowerCase()) !== -1) {
                 filteredApiDataModel.append(item)
             }
         }