diff --git a/compute-pressure/compute_pressure_basic.tentative.https.any.js b/compute-pressure/compute_pressure_basic.tentative.https.any.js
index 18b8985cf51c2c..28322ced729af6 100644
--- a/compute-pressure/compute_pressure_basic.tentative.https.any.js
+++ b/compute-pressure/compute_pressure_basic.tentative.https.any.js
@@ -39,7 +39,7 @@ pressure_test((t, mockPressureService) => {
   mockPressureService.setPressureUpdate('cpu', 'critical');
   mockPressureService.startPlatformCollector(/*sampleRate=*/ 5.0);
 
-  return promise_rejects_dom(t, 'NotSupportedError', promise);
+  return promise_rejects_dom(t, 'AbortError', promise);
 }, 'Removing observer before observe() resolves works');
 
 pressure_test(async (t, mockPressureService) => {
diff --git a/compute-pressure/compute_pressure_disconnect_idempotent.tentative.https.any.js b/compute-pressure/compute_pressure_disconnect_idempotent.tentative.https.any.js
index 2f6421ee11711f..74d37bd6e5cc75 100644
--- a/compute-pressure/compute_pressure_disconnect_idempotent.tentative.https.any.js
+++ b/compute-pressure/compute_pressure_disconnect_idempotent.tentative.https.any.js
@@ -14,7 +14,7 @@ pressure_test(async (t, mockPressureService) => {
   const promise = observer1.observe('cpu');
   observer1.disconnect();
   observer1.disconnect();
-  await promise_rejects_dom(t, 'NotSupportedError', promise);
+  await promise_rejects_dom(t, 'AbortError', promise);
 
   const observer2_changes = [];
   await new Promise((resolve, reject) => {
diff --git a/compute-pressure/compute_pressure_disconnect_immediately.tentative.https.any.js b/compute-pressure/compute_pressure_disconnect_immediately.tentative.https.any.js
index b96ebd802e666b..9b545fbe1c33bc 100644
--- a/compute-pressure/compute_pressure_disconnect_immediately.tentative.https.any.js
+++ b/compute-pressure/compute_pressure_disconnect_immediately.tentative.https.any.js
@@ -13,7 +13,7 @@ pressure_test(async (t, mockPressureService) => {
   // Ensure that observer1's schema gets registered before observer2 starts.
   const promise = observer1.observe('cpu');
   observer1.disconnect();
-  await promise_rejects_dom(t, 'NotSupportedError', promise);
+  await promise_rejects_dom(t, 'AbortError', promise);
 
   const observer2_changes = [];
   await new Promise((resolve, reject) => {
@@ -53,7 +53,7 @@ pressure_test(async (t, mockPressureService) => {
     const promise = observer1.observe('cpu');
     observer2.observe('cpu');
     observer1.disconnect();
-    await promise_rejects_dom(t, 'NotSupportedError', promise);
+    await promise_rejects_dom(t, 'AbortError', promise);
     mockPressureService.setPressureUpdate('cpu', 'critical');
     mockPressureService.startPlatformCollector(/*sampleRate=*/ 5.0);
   });