diff --git a/ProjectPlane/ProjectPlane/MapsCollection.cs b/ProjectPlane/ProjectPlane/MapsCollection.cs
index d0da14d..b443f07 100644
--- a/ProjectPlane/ProjectPlane/MapsCollection.cs
+++ b/ProjectPlane/ProjectPlane/MapsCollection.cs
@@ -84,7 +84,7 @@ namespace ProjectPlane
             byte[] info = new UTF8Encoding(true).GetBytes(text);
             stream.Write(info, 0, info.Length);
         }
-        public bool SaveData(string filename)
+        public void SaveData(string filename)
         {
             if (File.Exists(filename))
             {
@@ -102,7 +102,6 @@ namespace ProjectPlane
                     );
                 }
             }
-            return true;
         }
 
 
@@ -111,11 +110,11 @@ namespace ProjectPlane
         /// </summary>
         /// <param name="filename"></param>
         /// <returns></returns>
-        public bool LoadData(string filename)
+        public void LoadData(string filename)
         {
             if (!File.Exists(filename))
             {
-                return false;
+                throw new Exception("File not found");
             }
             string bufferTextFromFile = "";
             using (FileStream fs = new(filename, FileMode.Open))
@@ -125,7 +124,7 @@ namespace ProjectPlane
 
                 if (!curLine.Contains("MapsCollection"))
                 {
-                    return false;
+                    throw new Exception("Incorrect format");
                 }
 
                 _mapStorages.Clear();
@@ -147,7 +146,6 @@ namespace ProjectPlane
                 }
 
             }
-            return true;
         }
     }
 }
\ No newline at end of file