diff --git a/AssetStudioFBXNative/asfbx_context.h b/AssetStudioFBXNative/asfbx_context.h
index 20f98fd..2fee5c7 100644
--- a/AssetStudioFBXNative/asfbx_context.h
+++ b/AssetStudioFBXNative/asfbx_context.h
@@ -4,18 +4,6 @@
 #include <string>
 #include <unordered_set>
 
-namespace fbxsdk
-{
-	class FbxManager;
-	class FbxScene;
-	class FbxExporter;
-	template<typename T, const int Alignment = 16>
-	class FbxArray;
-	class FbxFileTexture;
-	class FbxSurfacePhong;
-	class FbxPose;
-}
-
 struct AsFbxContext
 {