1 files changed, 4 insertions, 4 deletions
diff --git a/src/main.lib/Services/Interfaces/IArgumentsService.cs b/src/main.lib/Services/Interfaces/IArgumentsService.cs
index e613119..0f5621a 100644
--- a/src/main.lib/Services/Interfaces/IArgumentsService.cs
+++ b/src/main.lib/Services/Interfaces/IArgumentsService.cs
@@ -6,12 +6,12 @@ namespace PKISharp.WACS.Services
     public interface IArgumentsService
     {
         MainArguments MainArguments { get; }
-        T? GetArguments<T>() where T : class, new();
+        T GetArguments<T>() where T : class, new();
         bool Active();
         bool HasFilter();
-        Task<string> TryGetArgument(string providedValue, IInputService input, string what, bool secret = false);
-        Task<string> TryGetArgument(string providedValue, IInputService input, string[] what, bool secret = false);
-        string TryGetRequiredArgument(string optionName, string providedValue);
+        Task<string?> TryGetArgument(string? providedValue, IInputService input, string what, bool secret = false);
+        Task<string?> TryGetArgument(string? providedValue, IInputService input, string[] what, bool secret = false);
+        string TryGetRequiredArgument(string optionName, string? providedValue);
         void ShowHelp();
         void ShowCommandLine();
     }