diff --git a/test/pummel/test-heapdump-shadow-realm.js b/test/pummel/test-heapdump-shadow-realm.js
index 7ec40118c5b9ca..1482fe6b6fcb8b 100644
--- a/test/pummel/test-heapdump-shadow-realm.js
+++ b/test/pummel/test-heapdump-shadow-realm.js
@@ -11,7 +11,7 @@ let counter = 0;
 // snapshot can handle it.
 function createRealms() {
   // Use setImmediate to give GC some time to kick in to avoid OOM.
-  if (counter++ < 100) {
+  if (counter++ < 10) {
     realm = new ShadowRealm();
     realm.evaluate('undefined');
     setImmediate(createRealms);