diff --git a/source/MRMesh/MRObject.cpp b/source/MRMesh/MRObject.cpp
index 5ac8ff7f3a88..53560ef1f9fa 100644
--- a/source/MRMesh/MRObject.cpp
+++ b/source/MRMesh/MRObject.cpp
@@ -3,6 +3,7 @@
 #include "MRObjectTagEventDispatcher.h"
 #include "MRSerializer.h"
 #include "MRStringConvert.h"
+#include "MRBox.h"
 #include "MRHeapBytes.h"
 #include "MRphmap.h"
 #include "MRPch/MRJson.h"
@@ -859,6 +860,11 @@ void Object::swap( Object& other )
     swapSignals_( other );
 }
 
+Box3f Object::getWorldBox( ViewportId ) const
+{
+    return {}; // empty box
+}
+
 Box3f Object::getWorldTreeBox( ViewportId id ) const
 {
     Box3f res = getWorldBox( id );
diff --git a/source/MRMesh/MRObject.h b/source/MRMesh/MRObject.h
index d39dea577c6b..7afdd3ea9d9c 100644
--- a/source/MRMesh/MRObject.h
+++ b/source/MRMesh/MRObject.h
@@ -1,7 +1,6 @@
 #pragma once
 
 #include "MRAffineXf3.h"
-#include "MRBox.h"
 #include "MRExpected.h"
 #include "MRProgressCallback.h"
 #include "MRSignal.h"
@@ -244,7 +243,7 @@ class MRMESH_CLASS Object : public ObjectChildrenHolder
     MRMESH_API void swap( Object& other );
 
     /// returns bounding box of this object in world coordinates for default or specific viewport
-    virtual Box3f getWorldBox( ViewportId = {} ) const { return {}; } ///empty box
+    MRMESH_API virtual Box3f getWorldBox( ViewportId = {} ) const;
     /// returns bounding box of this object and all children visible in given (or default) viewport in world coordinates
     MRMESH_API Box3f getWorldTreeBox( ViewportId = {} ) const;
 
diff --git a/source/MRMesh/MRVisualObject.h b/source/MRMesh/MRVisualObject.h
index ad5f8af7f901..dae74b660db8 100644
--- a/source/MRMesh/MRVisualObject.h
+++ b/source/MRMesh/MRVisualObject.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "MRObject.h"
+#include "MRBox.h"
 #include "MRMeshTexture.h"
 #include "MRVector.h"
 #include "MRColor.h"