diff --git a/lib/pages/analytics/modules/air_quality/widgets/range_of_aqi_chart.dart b/lib/pages/analytics/modules/air_quality/widgets/range_of_aqi_chart.dart
index 2cefaa8e..9423c30d 100644
--- a/lib/pages/analytics/modules/air_quality/widgets/range_of_aqi_chart.dart
+++ b/lib/pages/analytics/modules/air_quality/widgets/range_of_aqi_chart.dart
@@ -13,7 +13,7 @@ class RangeOfAqiChart extends StatelessWidget {
     required this.chartData,
   });
 
-  List<(List<double> values, Color color, Color? dotColor)> _lines() => [
+  List<(List<double> values, Color color, Color? dotColor)> get _lines => [
         (
           chartData.map((e) => e.max).toList(),
           const Color(0xFF962DFF),
@@ -57,7 +57,7 @@ class RangeOfAqiChart extends StatelessWidget {
             ),
           ),
         ],
-        lineBarsData: _lines().map((e) {
+        lineBarsData: _lines.map((e) {
           final (values, color, dotColor) = e;
           return _buildLine(values: values, color: color, dotColor: dotColor);
         }).toList(),