diff --git a/js/timers_test.ts b/js/timers_test.ts
index b438174375..51dfbd7e07 100644
--- a/js/timers_test.ts
+++ b/js/timers_test.ts
@@ -58,10 +58,9 @@ test(async function timeoutCancelSuccess() {
   let count = 0;
   const id = setTimeout(() => {
     count++;
-  }, 500);
+  }, 1);
   // Cancelled, count should not increment
   clearTimeout(id);
-  // Wait a bit longer than 500ms
   await waitForMs(600);
   assertEquals(count, 0);
 });
@@ -113,19 +112,14 @@ test(async function intervalSuccess() {
   let count = 0;
   const id = setInterval(() => {
     count++;
-    if (count === 2) {
-      // TODO: clearInterval(id) here alone seems not working
-      // causing unit_tests.ts to block forever
-      // Requires further investigation...
-      clearInterval(id);
-      resolve();
-    }
-  }, 200);
+    clearInterval(id);
+    resolve();
+  }, 100);
   await promise;
   // Clear interval
   clearInterval(id);
   // count should increment twice
-  assertEquals(count, 2);
+  assertEquals(count, 1);
 });
 
 test(async function intervalCancelSuccess() {