diff --git a/src/MapsDb/DataService/BusStopDs.cs b/src/MapsDb/DataService/BusStopDs.cs
index 5e9a2e1..76004ea 100644
--- a/src/MapsDb/DataService/BusStopDs.cs
+++ b/src/MapsDb/DataService/BusStopDs.cs
@@ -45,7 +45,7 @@ namespace MapsDb.DataService
                     return data.OrderByDescending(i => i.GetType().GetProperty(pagination.sort).GetValue(i, null)).ToList();
             
                 default:
-                    return data.OrderBy(i => i.GetType().GetProperty(pagination.sort).GetValue(i, null)).ToList();
+                    return data.OrderByDescending(i => i.Id).ToList();
             }     
             
         }
diff --git a/src/MapsModels/DsModels/PaginationDsM.cs b/src/MapsModels/DsModels/PaginationDsM.cs
index 538d45e..5dd9957 100644
--- a/src/MapsModels/DsModels/PaginationDsM.cs
+++ b/src/MapsModels/DsModels/PaginationDsM.cs
@@ -5,9 +5,23 @@ namespace MapsModels.DsModels
         public const string ASC = "ASC";
         public const string DESC = "DESC";
         public int from { get; set; }
-        public int perPage { get; set; }
+        public int per_page;
         public string sort { get; set; }
+        public int perPage{
+            get{
+                if(per_page == 0){
+                    return 25;
+                }
+                return per_page;
+            } 
+            set{
+                per_page = value;
+            } 
+        }
         public string orderType(){
+            if(sort == null){
+                return null;
+            }
             if(sort.StartsWith("-")){
                 sort = sort.Substring(1);
                 return DESC;
--
libgit2 0.21.4