diff --git a/sandbox/SandboxWebApp/wwwroot/js/memorypack/AllConvertableType.ts b/sandbox/SandboxWebApp/wwwroot/js/memorypack/AllConvertableType.ts
index 1ca0ec9d..5c573692 100644
--- a/sandbox/SandboxWebApp/wwwroot/js/memorypack/AllConvertableType.ts
+++ b/sandbox/SandboxWebApp/wwwroot/js/memorypack/AllConvertableType.ts
@@ -1,9 +1,9 @@
 import { MemoryPackWriter } from "./MemoryPackWriter.js";
 import { MemoryPackReader } from "./MemoryPackReader.js";
-import { NoMarkByteEnum } from "./NoMarkByteEnum.js"; 
-import { NumberedUShortEnum } from "./NumberedUShortEnum.js"; 
-import { NestedObject } from "./NestedObject.js"; 
-import { IMogeUnion } from "./IMogeUnion.js"; 
+import { NoMarkByteEnum } from "./NoMarkByteEnum.js";
+import { NumberedUShortEnum } from "./NumberedUShortEnum.js";
+import { NestedObject } from "./NestedObject.js";
+import { IMogeUnion } from "./IMogeUnion.js";
 
 export class AllConvertableType {
     myBool: boolean;
diff --git a/sandbox/SandboxWebApp/wwwroot/js/memorypack/ArrayGenericsCheck.ts b/sandbox/SandboxWebApp/wwwroot/js/memorypack/ArrayGenericsCheck.ts
index 1705dd25..e4ab4a64 100644
--- a/sandbox/SandboxWebApp/wwwroot/js/memorypack/ArrayGenericsCheck.ts
+++ b/sandbox/SandboxWebApp/wwwroot/js/memorypack/ArrayGenericsCheck.ts
@@ -1,8 +1,8 @@
 import { MemoryPackWriter } from "./MemoryPackWriter.js";
 import { MemoryPackReader } from "./MemoryPackReader.js";
-import { NoMarkByteEnum } from "./NoMarkByteEnum.js"; 
-import { NestedObject } from "./NestedObject.js"; 
-import { IMogeUnion } from "./IMogeUnion.js"; 
+import { NoMarkByteEnum } from "./NoMarkByteEnum.js";
+import { NestedObject } from "./NestedObject.js";
+import { IMogeUnion } from "./IMogeUnion.js";
 
 export class ArrayGenericsCheck {
     array1: (NestedObject | null)[] | null;
diff --git a/sandbox/SandboxWebApp/wwwroot/js/memorypack/Person.ts b/sandbox/SandboxWebApp/wwwroot/js/memorypack/Person.ts
index 80d353e7..1c86d5f5 100644
--- a/sandbox/SandboxWebApp/wwwroot/js/memorypack/Person.ts
+++ b/sandbox/SandboxWebApp/wwwroot/js/memorypack/Person.ts
@@ -1,6 +1,6 @@
 import { MemoryPackWriter } from "./MemoryPackWriter.js";
 import { MemoryPackReader } from "./MemoryPackReader.js";
-import { Gender } from "./Gender.js"; 
+import { Gender } from "./Gender.js";
 
 export class Person {
     id: string;
diff --git a/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion1.ts b/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion1.ts
index 0d5c5124..24b2e2f7 100644
--- a/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion1.ts
+++ b/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion1.ts
@@ -1,6 +1,6 @@
 import { MemoryPackWriter } from "./MemoryPackWriter.js";
 import { MemoryPackReader } from "./MemoryPackReader.js";
-import { IMogeUnion } from "./IMogeUnion.js"; 
+import { IMogeUnion } from "./IMogeUnion.js";
 
 export class SampleUnion1 implements IMogeUnion {
     myProperty: number | null;
diff --git a/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion2.ts b/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion2.ts
index 0976da2c..1cea682d 100644
--- a/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion2.ts
+++ b/sandbox/SandboxWebApp/wwwroot/js/memorypack/SampleUnion2.ts
@@ -1,6 +1,6 @@
 import { MemoryPackWriter } from "./MemoryPackWriter.js";
 import { MemoryPackReader } from "./MemoryPackReader.js";
-import { IMogeUnion } from "./IMogeUnion.js"; 
+import { IMogeUnion } from "./IMogeUnion.js";
 
 export class SampleUnion2 implements IMogeUnion {
     myProperty: string | null;
diff --git a/src/MemoryPack.Core/Internal/TypeHelpers.cs b/src/MemoryPack.Core/Internal/TypeHelpers.cs
index 56ec170f..e40afeb4 100644
--- a/src/MemoryPack.Core/Internal/TypeHelpers.cs
+++ b/src/MemoryPack.Core/Internal/TypeHelpers.cs
@@ -7,6 +7,7 @@ namespace MemoryPack.Internal;
 internal static class TypeHelpers
 {
     static readonly MethodInfo isReferenceOrContainsReferences = typeof(RuntimeHelpers).GetMethod("IsReferenceOrContainsReferences")!;
+    static readonly MethodInfo unsafeSizeOf = typeof(Unsafe).GetMethod("SizeOf")!;
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static bool IsReferenceOrNullable<T>()
@@ -67,7 +68,7 @@ static Cache()
                     if (!containsReference)
                     {
                         IsUnmanagedSZArray = true;
-                        UnmanagedSZArrayElementSize = Marshal.SizeOf(elementType!);
+                        UnmanagedSZArrayElementSize = (int)unsafeSizeOf.MakeGenericMethod(elementType!).Invoke(null, null)!;
                     }
                 }
 #if NET7_0_OR_GREATER
diff --git a/src/MemoryPack.Unity/Assets/Plugins/MemoryPack/Runtime/MemoryPack.Core/Internal/TypeHelpers.cs b/src/MemoryPack.Unity/Assets/Plugins/MemoryPack/Runtime/MemoryPack.Core/Internal/TypeHelpers.cs
index 76ef009c..95615888 100644
--- a/src/MemoryPack.Unity/Assets/Plugins/MemoryPack/Runtime/MemoryPack.Core/Internal/TypeHelpers.cs
+++ b/src/MemoryPack.Unity/Assets/Plugins/MemoryPack/Runtime/MemoryPack.Core/Internal/TypeHelpers.cs
@@ -16,6 +16,7 @@ namespace MemoryPack.Internal {
 internal static class TypeHelpers
 {
     static readonly MethodInfo isReferenceOrContainsReferences = typeof(RuntimeHelpers).GetMethod("IsReferenceOrContainsReferences")!;
+    static readonly MethodInfo unsafeSizeOf = typeof(Unsafe).GetMethod("SizeOf")!;
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static bool IsReferenceOrNullable<T>()
@@ -76,7 +77,7 @@ static Cache()
                     if (!containsReference)
                     {
                         IsUnmanagedSZArray = true;
-                        UnmanagedSZArrayElementSize = Marshal.SizeOf(elementType!);
+                        UnmanagedSZArrayElementSize = (int)unsafeSizeOf.MakeGenericMethod(elementType!).Invoke(null, null)!;
                     }
                 }
 #if NET7_0_OR_GREATER
diff --git a/tests/MemoryPack.Tests/ArrayFormatterTest.cs b/tests/MemoryPack.Tests/ArrayFormatterTest.cs
index b78125d3..4142b775 100644
--- a/tests/MemoryPack.Tests/ArrayFormatterTest.cs
+++ b/tests/MemoryPack.Tests/ArrayFormatterTest.cs
@@ -35,7 +35,7 @@ public void ArrayTes()
             Convert(xs).ToArray().Should().Equal(xs.ToArray());
         }
         {
-            var xs =new ReadOnlyMemory<int>(new int[] { 1, 10, 100 });
+            var xs = new ReadOnlyMemory<int>(new int[] { 1, 10, 100 });
             Convert(xs).ToArray().Should().Equal(xs.ToArray());
         }
         //{
@@ -53,6 +53,15 @@ public void ArrayTes()
         }
     }
 
+    [Fact]
+    public void CharArrayTest()
+    {
+        var input = new[] { 'a', 'b', 'c' };
+        var bytes = MemoryPackSerializer.Serialize(input);
+        var output = MemoryPackSerializer.Deserialize<char[]>(bytes)!;
+        Assert.True(input.SequenceEqual(output));
+    }
+
     [Theory]
     [InlineData(100, 100, 10, 5)]
     [InlineData(10, 20, 15, 5)]