diff --git a/src/module/setChartData.js b/src/module/setChartData.js
index 8a62378..797c6b5 100644
--- a/src/module/setChartData.js
+++ b/src/module/setChartData.js
@@ -142,6 +142,7 @@ export function setBarChartData(baseData) {
  *   values in seconds.
  */
 export function timeRange(minTime, maxTime, amount) {
+  if (amount <= 1) return [Math.round(minTime)];
   // The X-axis (time axis) range is max - min; accumulate intervals from min to max by index
   const startTime = minTime;
   const endTime = maxTime;