diff --git a/src/mono/wasm/Wasm.Build.Tests/Blazor/BuildPublishTests.cs b/src/mono/wasm/Wasm.Build.Tests/Blazor/BuildPublishTests.cs
index e7be07f71c89e..fc22d03b303bc 100644
--- a/src/mono/wasm/Wasm.Build.Tests/Blazor/BuildPublishTests.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/Blazor/BuildPublishTests.cs
@@ -28,7 +28,7 @@ public BuildPublishTests(ITestOutputHelper output, SharedBuildPerTestClassFixtur
     [InlineData("Release")]
     public async Task DefaultTemplate_WithoutWorkload(string config)
     {
-        string id = $"blz_no_workload_{config}_{GetRandomId()}_{s_unicodeChar}";
+        string id = $"blz_no_workload_{config}_{GetRandomId()}_{s_unicodeChars}";
         CreateBlazorWasmTemplateProject(id);
 
         BlazorBuild(new BlazorBuildOptions(id, config));
@@ -63,7 +63,7 @@ public static TheoryData<string, bool> TestDataForDefaultTemplate_WithWorkload(b
     public void DefaultTemplate_NoAOT_WithWorkload(string config, bool testUnicode)
     {
         string id = testUnicode ?
-            $"blz_no_aot_{config}_{GetRandomId()}_{s_unicodeChar}" :
+            $"blz_no_aot_{config}_{GetRandomId()}_{s_unicodeChars}" :
             $"blz_no_aot_{config}_{GetRandomId()}";
         CreateBlazorWasmTemplateProject(id);
 
@@ -84,7 +84,7 @@ public void DefaultTemplate_NoAOT_WithWorkload(string config, bool testUnicode)
     public void DefaultTemplate_AOT_WithWorkload(string config, bool testUnicode)
     {
         string id = testUnicode ?
-            $"blz_aot_{config}_{GetRandomId()}_{s_unicodeChar}" :
+            $"blz_aot_{config}_{GetRandomId()}_{s_unicodeChars}" :
             $"blz_aot_{config}_{GetRandomId()}";
         CreateBlazorWasmTemplateProject(id);
 
diff --git a/src/mono/wasm/Wasm.Build.Tests/Blazor/MiscTests3.cs b/src/mono/wasm/Wasm.Build.Tests/Blazor/MiscTests3.cs
index 10717b334174b..eeaf368640e92 100644
--- a/src/mono/wasm/Wasm.Build.Tests/Blazor/MiscTests3.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/Blazor/MiscTests3.cs
@@ -33,7 +33,7 @@ public MiscTests3(ITestOutputHelper output, SharedBuildPerTestClassFixture build
     public async Task WithDllImportInMainAssembly(string config, bool build, bool publish)
     {
         // Based on https://github.com/dotnet/runtime/issues/59255
-        string id = $"blz_dllimp_{config}_{s_unicodeChar}";
+        string id = $"blz_dllimp_{config}_{s_unicodeChars}";
         if (build && publish)
             id += "build_then_publish";
         else if (build)
diff --git a/src/mono/wasm/Wasm.Build.Tests/BuildPublishTests.cs b/src/mono/wasm/Wasm.Build.Tests/BuildPublishTests.cs
index d171631c2c5e0..f287fa4574164 100644
--- a/src/mono/wasm/Wasm.Build.Tests/BuildPublishTests.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/BuildPublishTests.cs
@@ -158,7 +158,7 @@ void CheckOutputForNativeBuild(bool expectAOT, bool expectRelinking, BuildArgs b
         {
             if (testUnicode)
             {
-                string projectNameCore = buildArgs.ProjectName.Trim(new char[] {s_unicodeChar});
+                string projectNameCore = buildArgs.ProjectName.Replace(s_unicodeChars, "");
                 TestUtils.AssertMatches(@$"{projectNameCore}\S+.dll -> {projectNameCore}\S+.dll.bc", buildOutput, contains: expectAOT);
                 TestUtils.AssertMatches(@$"{projectNameCore}\S+.dll.bc -> {projectNameCore}\S+.dll.o", buildOutput, contains: expectAOT);
             }
diff --git a/src/mono/wasm/Wasm.Build.Tests/BuildTestBase.cs b/src/mono/wasm/Wasm.Build.Tests/BuildTestBase.cs
index f871c3d2bfe7b..03db9aed60118 100644
--- a/src/mono/wasm/Wasm.Build.Tests/BuildTestBase.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/BuildTestBase.cs
@@ -29,7 +29,7 @@ public abstract class BuildTestBase : IClassFixture<SharedBuildPerTestClassFixtu
         public const string DefaultTargetFrameworkForBlazor = "net9.0";
         public const string TargetFrameworkForTasks = "net9.0";
         private const string DefaultEnvironmentLocale = "en-US";
-        protected static readonly char s_unicodeChar = '\u7149';
+        protected static readonly string s_unicodeChars = "\u9FC0\u8712\u679B\u906B\u486B\u7149";
         protected static readonly bool s_skipProjectCleanup;
         protected static readonly string s_xharnessRunnerCommand;
         protected readonly ITestOutputHelper _testOutput;
@@ -239,10 +239,10 @@ protected string RunAndTestWasmApp(BuildArgs buildArgs,
 
             TestUtils.AssertSubstring("AOT: image 'System.Private.CoreLib' found.", output, contains: buildArgs.AOT);
 
-            if (s_isWindows && buildArgs.ProjectName.Contains(s_unicodeChar))
+            if (s_isWindows && buildArgs.ProjectName.Contains(s_unicodeChars))
             {
                 // unicode chars in output on Windows are decoded in unknown way, so finding utf8 string is more complicated
-                string projectNameCore = buildArgs.ProjectName.Trim(new char[] {s_unicodeChar});
+                string projectNameCore = buildArgs.ProjectName.Replace(s_unicodeChars, "");
                 TestUtils.AssertMatches(@$"AOT: image '{projectNameCore}\S+' found.", output, contains: buildArgs.AOT);
             }
             else
diff --git a/src/mono/wasm/Wasm.Build.Tests/NativeRebuildTests/NativeRebuildTestsBase.cs b/src/mono/wasm/Wasm.Build.Tests/NativeRebuildTests/NativeRebuildTestsBase.cs
index 10c2d6926d538..09fafe0df6939 100644
--- a/src/mono/wasm/Wasm.Build.Tests/NativeRebuildTests/NativeRebuildTestsBase.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/NativeRebuildTests/NativeRebuildTestsBase.cs
@@ -110,7 +110,7 @@ protected BuildArgs GenerateProjectContents(BuildArgs buildArgs, bool nativeReli
 
         // appending UTF-8 char makes sure project build&publish under all types of paths is supported
         protected string GetTestProjectPath(string prefix, string config, bool appendUnicode=true) =>
-            appendUnicode ? $"{prefix}_{config}_{s_unicodeChar}" : $"{prefix}_{config}";
+            appendUnicode ? $"{prefix}_{config}_{s_unicodeChars}" : $"{prefix}_{config}";
 
     }
 }