diff --git a/src/tests/GC/API/GC/GetTotalAllocatedBytes.cs b/src/tests/GC/API/GC/GetTotalAllocatedBytes.cs
index c6369889ca80b1..13ef35dbf46742 100644
--- a/src/tests/GC/API/GC/GetTotalAllocatedBytes.cs
+++ b/src/tests/GC/API/GC/GetTotalAllocatedBytes.cs
@@ -110,8 +110,11 @@ public static void TestAnotherThread()
         {
             object lck = new object();
 
+            // 1000 quickly created threads can be too many for a 32-bit environment, so reduce on 32-bit.
+            int threadCount = IntPtr.Size == 4 ? 100 : 1000;
+
             tsk = Task.Run(() => {
-                for (int i = 0; i < 1000; i++)
+                for (int i = 0; i < threadCount; i++)
                 {
                     Thread thd = new Thread(() => {
                         lock (lck)
@@ -177,7 +180,6 @@ public static void TestLohSohConcurrently()
     }
 
     [ActiveIssue("needs triage", TestRuntimes.Mono)]
-    [ActiveIssue("https://github.com/dotnet/runtime/issues/121482", typeof(TestLibrary.Utilities), nameof(TestLibrary.Utilities.IsArm))]
     [Fact]
     public static void TestEntryPoint() 
     {