diff --git a/test/hotspot/jtreg/runtime/Unsafe/AllocateMemory.java b/test/hotspot/jtreg/runtime/Unsafe/AllocateMemory.java
index 7d8d33b1225..b18bcb8cc13 100644
--- a/test/hotspot/jtreg/runtime/Unsafe/AllocateMemory.java
+++ b/test/hotspot/jtreg/runtime/Unsafe/AllocateMemory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -61,7 +61,7 @@ public class AllocateMemory {
         // allocateMemory() should throw an OutOfMemoryError when the underlying malloc fails,
         // since we start with -XX:MallocLimit
         try {
-            address = unsafe.allocateMemory(100 * 1024 * 1024);
+            address = unsafe.allocateMemory(101 * 1024 * 1024);
             throw new RuntimeException("Did not get expected OutOfMemoryError");
         } catch (OutOfMemoryError e) {
             // Expected
diff --git a/test/hotspot/jtreg/runtime/Unsafe/Reallocate.java b/test/hotspot/jtreg/runtime/Unsafe/Reallocate.java
index c15b931449d..dc0ce86fa1f 100644
--- a/test/hotspot/jtreg/runtime/Unsafe/Reallocate.java
+++ b/test/hotspot/jtreg/runtime/Unsafe/Reallocate.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -62,7 +62,7 @@ public class Reallocate {
 
         // Make sure we can throw an OOME when we fail to reallocate due to OOM
         try {
-            unsafe.reallocateMemory(address, 100 * 1024 * 1024);
+            unsafe.reallocateMemory(address, 101 * 1024 * 1024);
         } catch (OutOfMemoryError e) {
             // Expected
             return;