diff --git a/packages/jaeger-ui/src/components/SearchTracePage/SearchForm.test.js b/packages/jaeger-ui/src/components/SearchTracePage/SearchForm.test.js
index 86a669e36d..495902a8d4 100644
--- a/packages/jaeger-ui/src/components/SearchTracePage/SearchForm.test.js
+++ b/packages/jaeger-ui/src/components/SearchTracePage/SearchForm.test.js
@@ -54,8 +54,6 @@ function makeDateParams(dateOffset = 0) {
   };
 }
 
-const DATE_FORMAT = 'YYYY-MM-DD';
-const TIME_FORMAT = 'HH:mm';
 const defaultProps = {
   dataCenters: ['dc1'],
   handleSubmit: () => {},
diff --git a/packages/jaeger-ui/src/components/TracePage/TracePageHeader/AltViewOptions.test.js b/packages/jaeger-ui/src/components/TracePage/TracePageHeader/AltViewOptions.test.js
index 2de6ee2cf8..2cd81aa0de 100644
--- a/packages/jaeger-ui/src/components/TracePage/TracePageHeader/AltViewOptions.test.js
+++ b/packages/jaeger-ui/src/components/TracePage/TracePageHeader/AltViewOptions.test.js
@@ -15,7 +15,6 @@
 import * as React from 'react';
 import { shallow } from 'enzyme';
 import { Dropdown } from 'antd';
-import { Link } from 'react-router-dom';
 import AltViewOptions from './AltViewOptions';
 import * as track from './TracePageHeader.track';
 import { ETraceViewType } from '../types';
diff --git a/packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/VirtualizedTraceView.tsx b/packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/VirtualizedTraceView.tsx
index e0cfbeecba..f3ecb97879 100644
--- a/packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/VirtualizedTraceView.tsx
+++ b/packages/jaeger-ui/src/components/TracePage/TraceTimelineViewer/VirtualizedTraceView.tsx
@@ -372,7 +372,7 @@ export class VirtualizedTraceViewImpl extends React.Component<VirtualizedTraceVi
   };
 
   renderSpanBarRow(span: Span, spanIndex: number, key: string, style: React.CSSProperties, attrs: {}) {
-    const { spanID, childSpanIds } = span;
+    const { spanID } = span;
     const { serviceName } = span.process;
     const {
       childrenHiddenIDs,