diff --git a/csharp/App/Backend/DataTypes/Methods/Installation.cs b/csharp/App/Backend/DataTypes/Methods/Installation.cs
index 3ec874011..76d6ac88b 100644
--- a/csharp/App/Backend/DataTypes/Methods/Installation.cs
+++ b/csharp/App/Backend/DataTypes/Methods/Installation.cs
@@ -76,7 +76,7 @@ public static class InstallationMethods
         var deletedInstallation = new DeletedInstallation();
         foreach (var property in installation.GetType().GetProperties())
         {
-            property.SetValue(deletedInstallation ,property.GetValue(installation));
+            property.SetValue(deletedInstallation, property.GetValue(installation));
         }
 
         return deletedInstallation;
diff --git a/csharp/App/Backend/Database/Delete.cs b/csharp/App/Backend/Database/Delete.cs
index a99229584..55ff12f84 100644
--- a/csharp/App/Backend/Database/Delete.cs
+++ b/csharp/App/Backend/Database/Delete.cs
@@ -23,37 +23,42 @@ public static partial class Db
         {
             FolderAccess  .Delete(r => r.FolderId == f.Id);
             Installations.Delete(r => r.ParentId == f.Id);
-            var delete = Folders.Delete(r => r.Id == f.Id);
-            BackupDatabase();
-            return delete > 0;
+            var delete = Folders.Delete(r => r.Id == f.Id);            
+            var deleteSuccess = delete > 0;
+            if (deleteSuccess)
+                BackupDatabase();
+            return deleteSuccess;
         }
     }
 
     public static Boolean Delete(Installation installation)
     {
-        return RunTransaction(DeleteInstallationAndItsDependencies);
-
+        var deleteSuccess = RunTransaction(DeleteInstallationAndItsDependencies);
+        if (deleteSuccess)
+            BackupDatabase();
+        return deleteSuccess;
+        
+        
         Boolean DeleteInstallationAndItsDependencies()
         {
             InstallationAccess.Delete(i => i.InstallationId == installation.Id);
-            var delete = Installations.Delete(i => i.Id == installation.Id);
-            BackupDatabase();
-            return delete > 0;
+            return Installations.Delete(i => i.Id == installation.Id) > 0;
         }
     }
 
     public static Boolean Delete(User user)
     {
-        return RunTransaction(DeleteUserAndHisDependencies);
+        var deleteSuccess = RunTransaction(DeleteUserAndHisDependencies);
+        if (deleteSuccess)
+            BackupDatabase();
+        return deleteSuccess;
         
         Boolean DeleteUserAndHisDependencies()
         {
             FolderAccess      .Delete(u => u.UserId == user.Id);
             InstallationAccess.Delete(u => u.UserId == user.Id);
 
-            var delete = Users.Delete(u => u.Id == user.Id);
-            BackupDatabase();
-            return delete > 0;
+            return Users.Delete(u => u.Id == user.Id) > 0;
         }
     }
     
@@ -64,7 +69,8 @@ public static partial class Db
     private static Boolean Delete(Session session)
     {
         var delete = Sessions.Delete(s => s.Id == session.Id) > 0;
-        BackupDatabase();
+        if (delete) 
+            BackupDatabase();
         return delete;
     }
 }
\ No newline at end of file