diff --git a/SabreTools.Models/Metadata/DictionaryBase.cs b/SabreTools.Models/Metadata/DictionaryBase.cs
index afcc309..3367515 100644
--- a/SabreTools.Models/Metadata/DictionaryBase.cs
+++ b/SabreTools.Models/Metadata/DictionaryBase.cs
@@ -100,7 +100,7 @@ namespace SabreTools.Models.Metadata
 
             string[]? asArray = Read<string[]>(key);
             if (asArray != null)
-#if NETFRAMEWORK
+#if NETFRAMEWORK || NETSTANDARD2_0
                 return string.Join(",", asArray);
 #else
                 return string.Join(',', asArray);
diff --git a/SabreTools.Models/SabreTools.Models.csproj b/SabreTools.Models/SabreTools.Models.csproj
index 4f62685..9a6247f 100644
--- a/SabreTools.Models/SabreTools.Models.csproj
+++ b/SabreTools.Models/SabreTools.Models.csproj
@@ -2,10 +2,10 @@
 
     <PropertyGroup>
         <!-- Assembly Properties -->
-        <TargetFrameworks>net20;net35;net40;net452;net462;net472;net48;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
+        <TargetFrameworks>net20;net35;net40;net452;net462;net472;net48;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0;netstandard2.0;netstandard2.1</TargetFrameworks>
         <IncludeSymbols>true</IncludeSymbols>
         <LangVersion>latest</LangVersion>
-        <NoWarn>CS0618</NoWarn>
+        <NoWarn>CS0618;NETSDK1215</NoWarn>
         <Nullable>enable</Nullable>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>