diff --git a/app.js b/app.js
index 7493418..f145f90 100644
--- a/app.js
+++ b/app.js
@@ -2,6 +2,7 @@
 const chartDom = document.getElementById('chart-container');
 const myChart = echarts.init(chartDom);
 let option;
+let originalSunburstData = null; // Stores the original data for the current month (for reset on center click)
 
 // Function to parse CSV data
 async function parseCSV(file) {
@@ -317,9 +318,9 @@ function getRussianMonthName(dateStr) {
 // Function to render the chart
 function renderChart(data) {
     const sunburstData = transformToSunburst(data);
-    
-    // Store the original data for resetting
-    const originalData = JSON.parse(JSON.stringify(sunburstData));
+
+    // Store the original data for resetting (module-level variable)
+    originalSunburstData = JSON.parse(JSON.stringify(sunburstData));
     
     // Get the currently selected month
     const selectedMonth = document.getElementById('month-select').value;
@@ -798,11 +799,13 @@ function renderChart(data) {
         // Check if click is within the center circle
         const distance = Math.sqrt(Math.pow(x - centerX, 2) + Math.pow(y - centerY, 2));
         if (distance < innerRadius) {
-            // Reset to original view
-            option.series.data = originalData.data;
-            option.graphic.elements[0].style.text = russianMonth + '\n' + originalData.total.toFixed(0).toLocaleString() + ' ₽';
+            // Reset to original view - use module-level originalSunburstData
+            const currentMonth = document.getElementById('month-select').value;
+            const currentRussianMonth = getRussianMonthName(currentMonth);
+            option.series.data = originalSunburstData.data;
+            option.graphic.elements[0].style.text = currentRussianMonth + '\n' + originalSunburstData.total.toFixed(0).toLocaleString() + ' ₽';
             myChart.setOption(option, { replaceMerge: ['series'] });
-            setupHoverEvents(originalData);
+            setupHoverEvents(originalSunburstData);
         }
     });
     
@@ -1040,6 +1043,9 @@ async function selectMonth(index) {
     if (option && option.series && option.series.data) {
         const sunburstData = transformToSunburst(data);
 
+        // Update the module-level original data for center-click reset
+        originalSunburstData = JSON.parse(JSON.stringify(sunburstData));
+
         // Update only the series data and preserve layout
         const oldData = option.series.data;
         const newData = sunburstData.data;