diff --git a/withdll/Program.cs b/withdll/Program.cs
index 6e001ce..6e64eb4 100644
--- a/withdll/Program.cs
+++ b/withdll/Program.cs
@@ -21,7 +21,13 @@ public static int Main(string[] args)
         }
 
         var dllpaths = (parsedArgs.TryGetValue("d", out var d1) ? d1 : new List<string>(0)).Union(
-                        parsedArgs.TryGetValue("dll", out var d2) ? d2 : new List<string>(0)).ToList();
+                        parsedArgs.TryGetValue("dll", out var d2) ? d2 : new List<string>(0))
+                        .Select(Path.GetFullPath).Distinct().ToList();
+        if (dllpaths.FirstOrDefault(p => !Path.Exists(p)) is {} p)
+        {
+            Console.WriteLine($"Error: DLL file '{p}' does not exist");
+            return 1;
+        }
 
         try
         {
diff --git a/withdll/withdll.csproj b/withdll/withdll.csproj
index 8127c55..493d7ba 100644
--- a/withdll/withdll.csproj
+++ b/withdll/withdll.csproj
@@ -4,7 +4,7 @@
         <OutputType>Exe</OutputType>
         <TargetFramework>net8.0-windows</TargetFramework>
         <Copyright>2023 Sebastian Solnica</Copyright>
-        <AssemblyVersion>1.0.0.0</AssemblyVersion>
+        <AssemblyVersion>1.0.1.0</AssemblyVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>