diff --git a/x-pack/plugins/apm/public/components/shared/time_comparison/index.tsx b/x-pack/plugins/apm/public/components/shared/time_comparison/index.tsx
index 44ba1d3104805..1769119593c0e 100644
--- a/x-pack/plugins/apm/public/components/shared/time_comparison/index.tsx
+++ b/x-pack/plugins/apm/public/components/shared/time_comparison/index.tsx
@@ -84,13 +84,13 @@ function getSelectOptions({
     }),
   };
 
-  const dateDiff = Math.round(
+  const dateDiff = Number(
     getDateDifference({
       start: momentStart,
       end: momentEnd,
       unitOfTime: 'days',
       precise: true,
-    })
+    }).toFixed(2)
   );
 
   const isRangeToNow = rangeTo === 'now';
diff --git a/x-pack/plugins/apm/public/selectors/latency_chart_selectors.ts b/x-pack/plugins/apm/public/selectors/latency_chart_selectors.ts
index 4f18681da5bcd..2ee4a717106eb 100644
--- a/x-pack/plugins/apm/public/selectors/latency_chart_selectors.ts
+++ b/x-pack/plugins/apm/public/selectors/latency_chart_selectors.ts
@@ -30,17 +30,12 @@ export function getLatencyChartSelector({
   latencyChart?: LatencyChartsResponse;
   theme: EuiTheme;
   latencyAggregationType?: string;
-}): LatencyChartData {
+}): Partial<LatencyChartData> {
   if (
     !latencyChart?.currentPeriod.latencyTimeseries ||
     !latencyAggregationType
   ) {
-    return {
-      currentPeriod: undefined,
-      previousPeriod: undefined,
-      mlJobId: undefined,
-      anomalyTimeseries: undefined,
-    };
+    return {};
   }
   return {
     currentPeriod: getLatencyTimeseries({
@@ -73,9 +68,7 @@ function getPreviousPeriodTimeseries({
     color: theme.eui.euiColorLightestShade,
     title: i18n.translate(
       'xpack.apm.serviceOverview.latencyChartTitle.previousPeriodLabel',
-      {
-        defaultMessage: 'Previous period',
-      }
+      { defaultMessage: 'Previous period' }
     ),
   };
 }