diff --git a/AssParser.Lib/AssParser.Lib.csproj b/AssParser.Lib/AssParser.Lib.csproj
index 4a72105..c54429d 100644
--- a/AssParser.Lib/AssParser.Lib.csproj
+++ b/AssParser.Lib/AssParser.Lib.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <PackageReadmeFile>README.md</PackageReadmeFile>
diff --git a/AssParser.Lib/AssParser.cs b/AssParser.Lib/AssParser.cs
index ca7aa7f..91c6095 100644
--- a/AssParser.Lib/AssParser.cs
+++ b/AssParser.Lib/AssParser.cs
@@ -45,7 +45,8 @@ public static async Task<AssSubtitleModel> ParseAssFile(StreamReader assStream)
                 {
                     continue;
                 }
-                if (tag is not ['[', .., ']'])
+                //if (tag is not ['[', .., ']']) //.net 7+ only
+                if (!tag.StartsWith('[') || !tag.EndsWith(']'))
                 {
                     throw new AssParserException($"{tag} is not a valid section name", assStream, lineCount, AssParserErrorType.InvalidSection);
                 }