diff --git a/GMap.NET/GMap.NET.Core/Internals/Core.cs b/GMap.NET/GMap.NET.Core/Internals/Core.cs
index ffe43bd9..3e662d50 100644
--- a/GMap.NET/GMap.NET.Core/Internals/Core.cs
+++ b/GMap.NET/GMap.NET.Core/Internals/Core.cs
@@ -794,11 +794,11 @@ public void CancelAsyncTasks()
         volatile int _skipOverZoom;
 
 #if NETFRAMEWORK
-        static readonly BlockingCollection<LoadTask> TileLoadQueue4 =
+        readonly BlockingCollection<LoadTask> TileLoadQueue4 =
             new BlockingCollection<LoadTask>(new ConcurrentStack<LoadTask>());
 
-        static List<Task> _tileLoadQueue4Tasks;
-        static int _loadWaitCount;
+        List<Task> _tileLoadQueue4Tasks;
+        int _loadWaitCount;
         void AddLoadTask(LoadTask t)
         {
             if (_tileLoadQueue4Tasks == null)