diff --git a/MinecraftLaunch/Classes/Enums/Platform.cs b/MinecraftLaunch/Classes/Enums/Platform.cs
new file mode 100644
index 0000000..fa5dc1a
--- /dev/null
+++ b/MinecraftLaunch/Classes/Enums/Platform.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MinecraftLaunch.Classes.Enums
+{
+    public enum Platform
+    {
+        windows,
+        linux,
+        osx,
+        unknown
+    }
+}
diff --git a/MinecraftLaunch/Classes/Models/Game/LibraryJsonEntry.cs b/MinecraftLaunch/Classes/Models/Game/LibraryJsonEntry.cs
index 34a872f..98a8a39 100644
--- a/MinecraftLaunch/Classes/Models/Game/LibraryJsonEntry.cs
+++ b/MinecraftLaunch/Classes/Models/Game/LibraryJsonEntry.cs
@@ -1,4 +1,5 @@
 using System.Text.Json.Serialization;
+using MinecraftLaunch.Classes.Enums;
 using MinecraftLaunch.Classes.Models.Download;
 
 namespace MinecraftLaunch.Classes.Models.Game {
@@ -10,14 +11,15 @@ public record LibraryJsonEntry {
         public DownloadsEntry Downloads { get; set; }
 
         [JsonPropertyName("natives")]
-        public Dictionary<string, string> Natives { get; set; }
+        public Dictionary<Platform, string> Natives { get; set; }
     }
 
-    public record RuleModel {
+    public record RuleModel
+    {
         [JsonPropertyName("action")]
         public string Action { get; set; }
 
         [JsonPropertyName("os")]
-        public Dictionary<string, string> System { get; set; }
+        public Dictionary<string, Platform> System { get; set; }
     }
 }
diff --git a/MinecraftLaunch/Components/Fetcher/JavaFetcher.cs b/MinecraftLaunch/Components/Fetcher/JavaFetcher.cs
index 5f45b65..35fb333 100644
--- a/MinecraftLaunch/Components/Fetcher/JavaFetcher.cs
+++ b/MinecraftLaunch/Components/Fetcher/JavaFetcher.cs
@@ -6,6 +6,7 @@
 using System.Runtime.InteropServices;
 using MinecraftLaunch.Classes.Interfaces;
 using MinecraftLaunch.Classes.Models.Game;
+using MinecraftLaunch.Classes.Enums;
 
 namespace MinecraftLaunch.Components.Fetcher {
     public class JavaFetcher : IFetcher<ImmutableArray<JavaEntry>> {
@@ -67,9 +68,9 @@ public ImmutableArray<JavaEntry> Fetch() {
 
         public async ValueTask<ImmutableArray<JavaEntry>> FetchAsync() {
             return EnvironmentUtil.GetPlatformName() switch {
-                "windows" => FetchWindowJava(),
-                "osx" => await FetchMacJavaAsync(),
-                "linux" => await FetchLinuxJavaAsync(),
+                Platform.windows => FetchWindowJava(),
+                Platform.osx => await FetchMacJavaAsync(),
+                Platform.linux => await FetchLinuxJavaAsync(),
                 _ => FetchWindowJava()
             };
         }
diff --git a/MinecraftLaunch/Components/Launcher/ArgumentsBuilder.cs b/MinecraftLaunch/Components/Launcher/ArgumentsBuilder.cs
index 848ef87..800094b 100644
--- a/MinecraftLaunch/Components/Launcher/ArgumentsBuilder.cs
+++ b/MinecraftLaunch/Components/Launcher/ArgumentsBuilder.cs
@@ -148,9 +148,9 @@ private string GetClasspath() {
         }
 
         private static IEnumerable<string> GetEnvironmentJvmArguments() {
-            string platformName = EnvironmentUtil.GetPlatformName();
-            if (!(platformName == "windows")) {
-                if (platformName == "osx")
+            Platform platformName = EnvironmentUtil.GetPlatformName();
+            if (!(platformName == Platform.windows)) {
+                if (platformName == Platform.osx)
                     yield return "-XstartOnFirstThread";
             } else {
                 yield return "-XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump";
diff --git a/MinecraftLaunch/Components/Resolver/LibrariesResolver.cs b/MinecraftLaunch/Components/Resolver/LibrariesResolver.cs
index 180efbd..f786f0d 100644
--- a/MinecraftLaunch/Components/Resolver/LibrariesResolver.cs
+++ b/MinecraftLaunch/Components/Resolver/LibrariesResolver.cs
@@ -4,6 +4,7 @@
 using MinecraftLaunch.Extensions;
 using MinecraftLaunch.Classes.Interfaces;
 using MinecraftLaunch.Classes.Models.Game;
+using MinecraftLaunch.Classes.Enums;
 
 namespace MinecraftLaunch.Components.Resolver;
 
@@ -111,13 +112,13 @@ private bool GetLibraryEnable(IEnumerable<RuleModel> rules) {
 
                 foreach (var os in item.System) {
                     switch (os.Value) {
-                        case "windows":
+                        case Platform.windows:
                             windows = true;
                             break;
-                        case "linux":
+                        case Platform.linux:
                             linux = true;
                             break;
-                        case "osx":
+                        case Platform.osx:
                             osx = true;
                             break;
                     }
@@ -130,13 +131,13 @@ private bool GetLibraryEnable(IEnumerable<RuleModel> rules) {
 
                 foreach (var os in item.System) {
                     switch (os.Value) {
-                        case "windows":
+                        case Platform.windows:
                             windows = false;
                             break;
-                        case "linux":
+                        case Platform.linux:
                             linux = false;
                             break;
-                        case "osx":
+                        case Platform.osx:
                             osx = false;
                             break;
                     }
@@ -145,9 +146,9 @@ private bool GetLibraryEnable(IEnumerable<RuleModel> rules) {
         }
 
         return EnvironmentUtil.GetPlatformName() switch {
-            "windows" => windows,
-            "linux" => linux,
-            "osx" => osx,
+            Platform.windows => windows,
+            Platform.linux=> linux,
+            Platform.osx => osx,
             _ => false,
         };
     }
diff --git a/MinecraftLaunch/Utilities/EnvironmentUtil.cs b/MinecraftLaunch/Utilities/EnvironmentUtil.cs
index 543006e..75e341d 100644
--- a/MinecraftLaunch/Utilities/EnvironmentUtil.cs
+++ b/MinecraftLaunch/Utilities/EnvironmentUtil.cs
@@ -1,4 +1,5 @@
-using System.Runtime.InteropServices;
+using MinecraftLaunch.Classes.Enums;
+using System.Runtime.InteropServices;
 
 namespace MinecraftLaunch.Utilities {
     public class EnvironmentUtil {
@@ -14,16 +15,16 @@ public static bool IsLinux
         public static bool IsWindow
             => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
 
-        public static string GetPlatformName() {
+        public static Platform GetPlatformName() {
             if (IsMac) {
-                return "osx";
+                return Platform.osx;
             } else if (IsLinux) {
-                return "linux";
+                return Platform.linux;
             } else if (IsWindow) {
-                return "windows";
+                return Platform.windows;
             }
 
-            return "unknown";
+            return Platform.unknown;
         }
     }
 }
diff --git a/MinecraftLaunch/Utilities/ZipUtil.cs b/MinecraftLaunch/Utilities/ZipUtil.cs
index 7c8f499..8bc7b95 100644
--- a/MinecraftLaunch/Utilities/ZipUtil.cs
+++ b/MinecraftLaunch/Utilities/ZipUtil.cs
@@ -1,4 +1,5 @@
-using System.IO.Compression;
+using MinecraftLaunch.Classes.Enums;
+using System.IO.Compression;
 
 namespace MinecraftLaunch.Utilities {
     public class ZipUtil {
@@ -10,9 +11,9 @@ public static void ExtractNatives(string targetFolder, IEnumerable<string> files
             DirectoryUtil.DeleteAllFiles(targetFolder);
 
             var extension = EnvironmentUtil.GetPlatformName() switch {
-                "windows" => ".dll",
-                "linux" => ".so",
-                "osx" => ".dylib",
+                Platform.windows => ".dll",
+                Platform.linux => ".so",
+                Platform.osx => ".dylib",
                 _ => "."
             };