diff --git a/addons/a11y/src/components/A11YPanel.test.js b/addons/a11y/src/components/A11YPanel.test.js
index 5c57664c573c..2f84b31afd39 100644
--- a/addons/a11y/src/components/A11YPanel.test.js
+++ b/addons/a11y/src/components/A11YPanel.test.js
@@ -63,7 +63,7 @@ function ThemedA11YPanel(props) {
 }
 
 describe('A11YPanel', () => {
-  it('should register STORY_RENDERED and RESULT updater on mount', () => {
+  it('should register STORY_RENDERED, RESULT and ERROR updater on mount', () => {
     // given
     const api = createApi();
     expect(api.on).not.toHaveBeenCalled();
@@ -72,9 +72,10 @@ describe('A11YPanel', () => {
     mount(<ThemedA11YPanel api={api} />);
 
     // then
-    expect(api.on.mock.calls.length).toBe(2);
+    expect(api.on.mock.calls.length).toBe(3);
     expect(api.on.mock.calls[0][0]).toBe(STORY_RENDERED);
     expect(api.on.mock.calls[1][0]).toBe(EVENTS.RESULT);
+    expect(api.on.mock.calls[2][0]).toBe(EVENTS.ERROR);
   });
 
   it('should request a run on tab activation', () => {
@@ -93,7 +94,7 @@ describe('A11YPanel', () => {
     expect(wrapper.find(ScrollArea).length).toBe(0);
   });
 
-  it('should deregister STORY_RENDERED and RESULT updater on unmount', () => {
+  it('should deregister STORY_RENDERED, RESULT and ERROR updater on unmount', () => {
     // given
     const api = createApi();
     const wrapper = mount(<ThemedA11YPanel api={api} />);
@@ -103,9 +104,10 @@ describe('A11YPanel', () => {
     wrapper.unmount();
 
     // then
-    expect(api.off.mock.calls.length).toBe(2);
+    expect(api.off.mock.calls.length).toBe(3);
     expect(api.off.mock.calls[0][0]).toBe(STORY_RENDERED);
     expect(api.off.mock.calls[1][0]).toBe(EVENTS.RESULT);
+    expect(api.off.mock.calls[2][0]).toBe(EVENTS.ERROR);
   });
 
   it('should update run result', () => {
diff --git a/addons/a11y/src/components/__snapshots__/A11YPanel.test.js.snap b/addons/a11y/src/components/__snapshots__/A11YPanel.test.js.snap
index 24e12e704048..2ac873d47536 100644
--- a/addons/a11y/src/components/__snapshots__/A11YPanel.test.js.snap
+++ b/addons/a11y/src/components/__snapshots__/A11YPanel.test.js.snap
@@ -177,6 +177,10 @@ exports[`A11YPanel should render report 1`] = `
             "storybook/a11y/result",
             [Function],
           ],
+          Array [
+            "storybook/a11y/error",
+            [Function],
+          ],
         ],
         "results": Array [
           Object {
@@ -187,6 +191,10 @@ exports[`A11YPanel should render report 1`] = `
             "type": "return",
             "value": undefined,
           },
+          Object {
+            "type": "return",
+            "value": undefined,
+          },
         ],
       },
     }