diff --git a/src/entities/activity/ui/items/Matrix/MatrixSingleSelectItem/RadioGrid.tsx b/src/entities/activity/ui/items/Matrix/MatrixSingleSelectItem/RadioGrid.tsx
index f4fb9e9eb..fd86f5dcf 100644
--- a/src/entities/activity/ui/items/Matrix/MatrixSingleSelectItem/RadioGrid.tsx
+++ b/src/entities/activity/ui/items/Matrix/MatrixSingleSelectItem/RadioGrid.tsx
@@ -27,7 +27,7 @@ export const RadioGrid = ({ rows, options, onChange, values }: Props) => {
             isEven={isEven}
             item={{ id: row.id, imageUrl: row.rowImage, text: row.rowName, tooltip: row.tooltip }}
           >
-            {options.map((option, optionI) => {
+            {options.map((option) => {
               const isChecked = option.text === values[rowI];
 
               return (
diff --git a/src/widgets/ActivityDetails/model/mappers.ts b/src/widgets/ActivityDetails/model/mappers.ts
index bee79abd6..e53a24ead 100644
--- a/src/widgets/ActivityDetails/model/mappers.ts
+++ b/src/widgets/ActivityDetails/model/mappers.ts
@@ -8,6 +8,7 @@ import {
   MultiSelectionRowsItem,
   RadioItem,
   SelectorItem,
+  SingleSelectionRowsItem,
   SliderItem,
   TextItem,
   TimeItem,
@@ -69,6 +70,9 @@ export function mapToAnswers(
       case 'multiSelectRows':
         return convertToMatrixMultiSelectAnswer(item);
 
+      case 'singleSelectRows':
+        return convertToMatrixSingleSelectAnswer(item);
+
       default:
         return null;
     }
@@ -252,6 +256,16 @@ function convertToMatrixMultiSelectAnswer(
   };
 }
 
+function convertToMatrixSingleSelectAnswer(item: SingleSelectionRowsItem) {
+  return {
+    answer: {
+      value: item.answer,
+      text: item.additionalText || null,
+    },
+    itemId: item.id,
+  };
+}
+
 export function mapAlerts(items: Array<appletModel.ItemRecord>): Array<AlertDTO> {
   const alerts = items.map((item) => {
     switch (item.responseType) {