diff --git a/client/app/scripts/reducers/__tests__/root-test.js b/client/app/scripts/reducers/__tests__/root-test.js
index f25701e0f..7f788187a 100644
--- a/client/app/scripts/reducers/__tests__/root-test.js
+++ b/client/app/scripts/reducers/__tests__/root-test.js
@@ -540,4 +540,15 @@ describe('RootReducer', () => {
     expect(nextState.get('selectedNodeId')).toBeFalsy();
     expect(nextState.getIn(['nodeDetails', 'n1'])).toBeFalsy();
   });
+  it('highlights bidirectional edges', () => {
+    const action = {
+      type: ActionTypes.ENTER_EDGE,
+      edgeId: 'abc123-def456'
+    };
+    const nextState = reducer(initialState, action);
+    expect(nextState.get('highlightedEdgeIds').toJS()).toEqual([
+      'abc123-def456',
+      'def456-abc123'
+    ]);
+  });
 });
diff --git a/client/app/scripts/reducers/root.js b/client/app/scripts/reducers/root.js
index bc1ad432f..49fe78d12 100644
--- a/client/app/scripts/reducers/root.js
+++ b/client/app/scripts/reducers/root.js
@@ -421,7 +421,10 @@ export function rootReducer(state = initialState, action) {
       // highlight edge
       state = state.update('highlightedEdgeIds', (highlightedEdgeIds) => {
         highlightedEdgeIds = highlightedEdgeIds.clear();
-        return highlightedEdgeIds.add(action.edgeId);
+        highlightedEdgeIds = highlightedEdgeIds.add(action.edgeId);
+        const opposite = action.edgeId.split(EDGE_ID_SEPARATOR).reverse().join(EDGE_ID_SEPARATOR);
+        highlightedEdgeIds = highlightedEdgeIds.add(opposite);
+        return highlightedEdgeIds;
       });
 
       return state;
diff --git a/client/app/scripts/utils/__tests__/layouter-utils-test.js b/client/app/scripts/utils/__tests__/layouter-utils-test.js
index f5d36ee23..7b0659929 100644
--- a/client/app/scripts/utils/__tests__/layouter-utils-test.js
+++ b/client/app/scripts/utils/__tests__/layouter-utils-test.js
@@ -1,7 +1,7 @@
 import { fromJS } from 'immutable';
 
 import {
-  initEdgesFromNodes,
+  initEdgesFromNodes
 } from '../layouter-utils';