diff --git a/src/tests/JIT/opt/Vectorization/StackallocBlkTests.cs b/src/tests/JIT/opt/Vectorization/StackallocBlkTests.cs
index 1f6415112bef1..1edc21bf1a87e 100644
--- a/src/tests/JIT/opt/Vectorization/StackallocBlkTests.cs
+++ b/src/tests/JIT/opt/Vectorization/StackallocBlkTests.cs
@@ -48,7 +48,7 @@ static void EnsureZeroed(byte* ptr, int size)
     }
     
     [MethodImpl(MethodImplOptions.NoInlining)]
-    static void Consume(byte* ptr) { } // to avoid dead-code elimination
+    static void Consume(byte* ptr) {} // to avoid dead-code elimination
 
     [MethodImpl(MethodImplOptions.NoInlining)]
     static T ToVar<T>(T o) => o; // convert a constant to a variable
diff --git a/src/tests/issues.targets b/src/tests/issues.targets
index 1792925a2ac90..11a0244ac8b3c 100644
--- a/src/tests/issues.targets
+++ b/src/tests/issues.targets
@@ -2197,6 +2197,9 @@
         <ExcludeList Include="$(XunitTestBinBase)/Interop/StringMarshalling/VBByRefStr/VBByRefStrTest/*">
             <Issue>https://github.com/dotnet/runtime/issues/65698</Issue>
         </ExcludeList>
+        <ExcludeList Include="$(XunitTestBinBase)/JIT/opt/Vectorization/StackallocBlkTests/*">
+            <Issue>https://github.com/dotnet/runtime/issues/84398</Issue>
+        </ExcludeList>
         <ExcludeList Include="$(XunitTestBinBase)/JIT/Directed/callconv/PlatformDefaultMemberFunction/PlatformDefaultMemberFunctionTest/*">
             <Issue>https://github.com/dotnet/runtime/issues/50440</Issue>
         </ExcludeList>