diff --git a/Applications/DataExplorer/DataView/GeoTreeModel.h b/Applications/DataExplorer/DataView/GeoTreeModel.h
index ddfa8becf82c68122291c14952122223fa4c4cc8..e6840e701c86a60696e7241364a91f56b8808e24 100644
--- a/Applications/DataExplorer/DataView/GeoTreeModel.h
+++ b/Applications/DataExplorer/DataView/GeoTreeModel.h
@@ -25,7 +25,7 @@
 
 namespace GeoLib
 {
-class GeoObject;
+struct GeoObject;
 }
 
 class QString;
diff --git a/Applications/DataExplorer/DataView/ProcessModel.h b/Applications/DataExplorer/DataView/ProcessModel.h
index c0c65838d6e23a3518ddc622647c7820c45e522d..dc505bc6bda02a2f7a59df67c3f3ba124ca11e4b 100644
--- a/Applications/DataExplorer/DataView/ProcessModel.h
+++ b/Applications/DataExplorer/DataView/ProcessModel.h
@@ -24,7 +24,7 @@ class vtkPolyDataAlgorithm;
 
 namespace GeoLib
 {
-class GeoObject;
+struct GeoObject;
 }
 
 /**
diff --git a/Applications/DataExplorer/DataView/SelectMeshDialog.h b/Applications/DataExplorer/DataView/SelectMeshDialog.h
index 49cd20d1e18adab6c88dc1262f7baa7d3134564d..9d10a6c8edd261b4f80b41a235aed1d429127092 100644
--- a/Applications/DataExplorer/DataView/SelectMeshDialog.h
+++ b/Applications/DataExplorer/DataView/SelectMeshDialog.h
@@ -17,7 +17,7 @@
 #include <QDialog>
 
 namespace GeoLib {
-    class GeoObject;
+struct GeoObject;
 }
 
 class QDialogButtonBox;
diff --git a/GeoLib/GeoObject.h b/GeoLib/GeoObject.h
index 4c86f63f74c7d2fb69996389e2cbb691c282a8e9..6a4862cdb5957c886171755fcb8091e7711953f5 100644
--- a/GeoLib/GeoObject.h
+++ b/GeoLib/GeoObject.h
@@ -19,12 +19,8 @@
 
 namespace GeoLib
 {
-class GeoObject
+struct GeoObject
 {
-public:
-    GeoObject() = default;
-    GeoObject(GeoObject const&) = default;
-    GeoObject& operator=(GeoObject const&) = default;
     virtual ~GeoObject() = default;
     /// return a geometry type
     virtual GEOTYPE getGeoType() const = 0;
diff --git a/MeshGeoToolsLib/BoundaryElementsSearcher.h b/MeshGeoToolsLib/BoundaryElementsSearcher.h
index a84a606a7ba97aa8e82bd52f5c5fe3de024b2922..f778fae8d336fc5c9e7984c12bc1475ded83f59c 100644
--- a/MeshGeoToolsLib/BoundaryElementsSearcher.h
+++ b/MeshGeoToolsLib/BoundaryElementsSearcher.h
@@ -11,7 +11,7 @@
 
 namespace GeoLib
 {
-class GeoObject;
+struct GeoObject;
 class Point;
 class Polyline;
 class Surface;
diff --git a/MeshGeoToolsLib/MeshNodeSearcher.h b/MeshGeoToolsLib/MeshNodeSearcher.h
index 0bf0e99117cad5197465b4821aad8c636461f013..910c0dad7d09b4507a94f43b24945616467c28fb 100644
--- a/MeshGeoToolsLib/MeshNodeSearcher.h
+++ b/MeshGeoToolsLib/MeshNodeSearcher.h
@@ -22,7 +22,7 @@
 // forward declaration
 namespace GeoLib
 {
-class GeoObject;
+struct GeoObject;
 class Point;
 class Polyline;
 class Surface;