diff --git a/Lesson_5/Task_1/Classes/PathConflictException.cs b/Lesson_5/Task_1/Classes/PathConflictException.cs
new file mode 100644
index 0000000..82d2fcd
--- /dev/null
+++ b/Lesson_5/Task_1/Classes/PathConflictException.cs
@@ -0,0 +1,19 @@
+namespace Lesson5.Classes;
+
+[Serializable]
+public class PathConflictException : Exception
+{
+    public PathConflictException ()
+    {
+    }
+
+    public PathConflictException (string message)
+        : base(message)
+    {
+    }
+
+    public PathConflictException (string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+}
diff --git a/Lesson_5/Task_1/Classes/Validation.cs b/Lesson_5/Task_1/Classes/Validation.cs
new file mode 100644
index 0000000..534592d
--- /dev/null
+++ b/Lesson_5/Task_1/Classes/Validation.cs
@@ -0,0 +1,20 @@
+namespace Lesson5.Classes;
+
+using Lesson5.Interfaces;
+
+public class Validation : IValidation
+{
+    public static string Check(string source, string destination)
+    {
+        if (File.Exists(destination))
+            throw new PathConflictException();
+
+        if (Directory.Exists(destination))
+            destination = Path.Combine(destination, Path.GetFileName(source));
+
+        if (File.Exists(destination) || Directory.Exists(destination))
+            throw new PathConflictException();
+
+        return destination;
+    }
+}
diff --git a/Lesson_5/Task_1/Program.cs b/Lesson_5/Task_1/Program.cs
index 69a4514..2f27dca 100644
--- a/Lesson_5/Task_1/Program.cs
+++ b/Lesson_5/Task_1/Program.cs
@@ -40,6 +40,16 @@ info - get data info
             string moveSource = Path.Combine(dir, UserInput.AskStringInput("Enter the source: "));
             string moveDestination = Path.Combine(dir, UserInput.AskStringInput("Enter the destination: "));
 
+            try
+            {
+                moveDestination = Validation.Check(moveSource, moveDestination);
+            }
+            catch (PathConflictException)
+            {
+                Console.WriteLine("Conflict.");
+                break;
+            }
+
             if (Directory.Exists(moveSource) || File.Exists(moveSource))
                 Directory.Move(moveSource, moveDestination);
             else
@@ -59,6 +69,16 @@ info - get data info
             string copySource = Path.Combine(dir, UserInput.AskStringInput("Enter the source: "));
             string copyDestination = Path.Combine(dir, UserInput.AskStringInput("Enter the destination: "));
 
+            try
+            {
+                copyDestination = Validation.Check(copySource, copyDestination);
+            }
+            catch (PathConflictException)
+            {
+                Console.WriteLine("Conflict.");
+                break;
+            }
+
             if (Directory.Exists(copySource))
                 CopyDirectory.Copy(copySource, copyDestination, true);
             else if (File.Exists(copySource))