diff --git a/Source/Engine/Core/Collections/Sorting.h b/Source/Engine/Core/Collections/Sorting.h
index 4fd26f794..6aa584ace 100644
--- a/Source/Engine/Core/Collections/Sorting.h
+++ b/Source/Engine/Core/Collections/Sorting.h
@@ -17,7 +17,7 @@ public:
     /// <summary>
     /// Helper collection used by the sorting algorithms. Implements stack using single linear allocation with variable capacity.
     /// </summary>
-    class SortingStack
+    class FLAXENGINE_API SortingStack
     {
     public: