diff --git a/src/GDShrapt.Reader.Tests/InvalidTokenTests.cs b/src/GDShrapt.Reader.Tests/InvalidTokenTests.cs
index 56c6c0b..0ac3b94 100644
--- a/src/GDShrapt.Reader.Tests/InvalidTokenTests.cs
+++ b/src/GDShrapt.Reader.Tests/InvalidTokenTests.cs
@@ -1,4 +1,5 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
+using FluentAssertions;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using System.Linq;
 
 namespace GDShrapt.Reader.Tests
@@ -35,5 +36,25 @@ public void DoubleStaticTest()
             Assert.AreEqual("static", declaration.AllInvalidTokens.First().Sequence);
             AssertHelper.CompareCodeStrings(code, declaration.ToString());
         }
+
+        [TestMethod]
+        public void InvalidClassNameTest()
+        {
+            var reader = new GDScriptReader();
+
+            var code = @"tool
+class_name 123H+=Ter^5r3_-ain-DataSaver
+extends ResourceFormatSaver
+";
+
+            var @class = reader.ParseFileContent(code);
+            Assert.IsNotNull(@class);
+
+            @class.AllInvalidTokens.Select(x => x.ToString()).Should().BeEquivalentTo(new string[] 
+            {
+                "123",
+                "H+=Ter^5r3_-ain-DataSaver"
+            });
+        }
     }
 }
diff --git a/src/GDShrapt.Reader/GDReadingState.cs b/src/GDShrapt.Reader/GDReadingState.cs
index a96fd8e..ec47e34 100644
--- a/src/GDShrapt.Reader/GDReadingState.cs
+++ b/src/GDShrapt.Reader/GDReadingState.cs
@@ -12,8 +12,6 @@ internal class GDReadingState
     {
         public GDReadSettings Settings { get; }
 
-        private readonly StackTrace _stackTrace;
-
         /// <summary>
         /// Main reading stack
         /// </summary>
@@ -23,7 +21,6 @@ internal class GDReadingState
         public GDReadingState(GDReadSettings settings)
         {
             Settings = settings;
-            _stackTrace = new StackTrace(false);
         }
 
         /// <summary>
@@ -121,7 +118,7 @@ public T Push<T>(T reader)
             if (Settings.MaxReadingStack.HasValue && _readersStack.Count == Settings.MaxReadingStack.Value)
                 throw new StackOverflowException("Maximum reading reading stack is reached.");
 
-            if (Settings.MaxStacktraceFramesCount.HasValue && _stackTrace.FrameCount >= Settings.MaxStacktraceFramesCount.Value)
+            if (Settings.MaxStacktraceFramesCount.HasValue && new StackTrace(false).FrameCount >= Settings.MaxStacktraceFramesCount.Value)
                 throw new StackOverflowException("Maximum stackTrace frames count is reached.");
 
             _readersStack.Push(reader);
diff --git a/src/GDShrapt.Reader/GDShrapt.Reader.csproj b/src/GDShrapt.Reader/GDShrapt.Reader.csproj
index 0aa7aae..5e8eac5 100644
--- a/src/GDShrapt.Reader/GDShrapt.Reader.csproj
+++ b/src/GDShrapt.Reader/GDShrapt.Reader.csproj
@@ -16,8 +16,8 @@ Usage: Just create a GDScriptReader instance and call methods from it.</Descript
     <RepositoryUrl>https://github.com/elamaunt/GDShrapt</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageTags>GDShrapt GDScript reader parser codegeneration Godot lexical analyzer</PackageTags>
-    <AssemblyVersion>4.0.0</AssemblyVersion>
-    <FileVersion>4.0.0</FileVersion>
+    <AssemblyVersion>4.0.1</AssemblyVersion>
+    <FileVersion>4.0.1</FileVersion>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
   </PropertyGroup>
 
diff --git a/src/GDShrapt.Reader/Resolvers/GDClassMembersResolver.cs b/src/GDShrapt.Reader/Resolvers/GDClassMembersResolver.cs
index 51ef36c..3d5eaf0 100644
--- a/src/GDShrapt.Reader/Resolvers/GDClassMembersResolver.cs
+++ b/src/GDShrapt.Reader/Resolvers/GDClassMembersResolver.cs
@@ -64,7 +64,7 @@ internal override void HandleCharAfterIntendation(char c, GDReadingState state)
                     else
                     {
                         SendIntendationTokensToOwner();
-                        Owner.HandleReceivedToken(state.Push(new GDInvalidToken(x => x != '@' || char.IsLetter(x) || x.IsSpace() || x.IsNewLine())));
+                        Owner.HandleReceivedToken(state.Push(new GDInvalidToken(x => x == '@' || char.IsLetter(x) || x.IsSpace() || x.IsNewLine())));
                     }
 
                     state.PassChar(c);