diff --git a/timeserieschart/src/TimeSeriesChartPanel.tsx b/timeserieschart/src/TimeSeriesChartPanel.tsx
index e613084b..d39af4da 100644
--- a/timeserieschart/src/TimeSeriesChartPanel.tsx
+++ b/timeserieschart/src/TimeSeriesChartPanel.tsx
@@ -54,7 +54,6 @@ import {
   DEFAULT_VISUAL,
   THRESHOLD_PLOT_INTERVAL,
   QuerySettingsOptions,
-  LOG_BASE,
 } from './time-series-chart-model';
 import {
   getTimeSeries,
@@ -122,13 +121,10 @@ export function TimeSeriesChartPanel(props: TimeSeriesChartProps): ReactElement
     return merge({}, DEFAULT_VISUAL, props.spec.visual);
   }, [props.spec.visual]);
 
-  // Use the logBase from yAxis options, defaulting to 'none' if not set
-  const useLogarithmicBase: LOG_BASE = yAxis?.logBase;
-
   // convert Perses dashboard format to be ECharts compatible
   const echartsYAxis = useMemo(() => {
-    return convertPanelYAxis(yAxis, useLogarithmicBase);
-  }, [yAxis, useLogarithmicBase]);
+    return convertPanelYAxis(yAxis);
+  }, [yAxis]);
 
   const [selectedLegendItems, setSelectedLegendItems] = useState<SelectedLegendItemState>('ALL');
   const [legendSorting, setLegendSorting] = useState<NonNullable<LegendProps['tableProps']>['sorting']>();
diff --git a/timeserieschart/src/utils/data-transform.test.ts b/timeserieschart/src/utils/data-transform.test.ts
index 75eacea2..9efd0aef 100644
--- a/timeserieschart/src/utils/data-transform.test.ts
+++ b/timeserieschart/src/utils/data-transform.test.ts
@@ -54,7 +54,7 @@ describe('convertPanelYAxis', () => {
       min: 0.1,
       max: 1,
     };
-    const echartsAxis = convertPanelYAxis(persesAxis, undefined);
+    const echartsAxis = convertPanelYAxis(persesAxis);
     // Axis label is handled outside of echarts since it is built with a custom React component.
     expect(echartsAxis).toEqual({
       show: true,
@@ -75,8 +75,9 @@ describe('convertPanelYAxis', () => {
       },
       min: 0.1,
       max: 1,
+      logBase: 2,
     };
-    const actualAxisLog2 = convertPanelYAxis(persesAxis, 2);
+    const actualAxisLog2 = convertPanelYAxis(persesAxis);
     // Axis label is handled outside of echarts since it is built with a custom React component.
     expect(actualAxisLog2).toEqual({
       show: true,
@@ -88,7 +89,8 @@ describe('convertPanelYAxis', () => {
         show: true,
       },
     });
-    const actualAxisLog10 = convertPanelYAxis(persesAxis, 10);
+    persesAxis.logBase = 10;
+    const actualAxisLog10 = convertPanelYAxis(persesAxis);
     // Axis label is handled outside of echarts since it is built with a custom React component.
     expect(actualAxisLog10).toEqual({
       show: true,
diff --git a/timeserieschart/src/utils/data-transform.ts b/timeserieschart/src/utils/data-transform.ts
index b6dde148..0577e523 100644
--- a/timeserieschart/src/utils/data-transform.ts
+++ b/timeserieschart/src/utils/data-transform.ts
@@ -40,7 +40,6 @@ import {
   TimeSeriesChartVisualOptions,
   TimeSeriesChartYAxisOptions,
   LineStyleType,
-  LOG_BASE,
 } from '../time-series-chart-model';
 
 export type RunningQueriesState = ReturnType<typeof useTimeSeriesQueries>;
@@ -232,13 +231,10 @@ function findMax(data: LegacyTimeSeries[] | TimeSeries[]): number {
  * Converts Perses panel yAxis from dashboard spec to ECharts supported yAxis options.
  * Handles both linear and logarithmic scales with appropriate min/max calculations.
  */
-export function convertPanelYAxis(
-  inputAxis: TimeSeriesChartYAxisOptions = {},
-  useLogarithmicBase: LOG_BASE | undefined
-): YAXisComponentOption {
+export function convertPanelYAxis(inputAxis: TimeSeriesChartYAxisOptions = {}): YAXisComponentOption {
   // Determine the appropriate min value based on scale type and user input
   let minValue: YAXisComponentOption['min'];
-  if (useLogarithmicBase !== undefined) {
+  if (inputAxis.logBase !== undefined) {
     // For logarithmic scales without explicit min:
     // Let ECharts auto-calculate the range based on data to avoid issues with
     // function-based calculations which can result in improper ranges (e.g., 1-10)
@@ -277,11 +273,11 @@ export function convertPanelYAxis(
   };
 
   // Apply logarithmic scale settings if requested
-  if (useLogarithmicBase !== undefined) {
+  if (inputAxis.logBase !== undefined) {
     return {
       ...yAxis,
       type: 'log',
-      logBase: useLogarithmicBase,
+      logBase: inputAxis.logBase,
     };
   }