diff --git a/src/OpenMesh/Core/Utils/BaseProperty.hh b/src/OpenMesh/Core/Utils/BaseProperty.hh
index e2b385f3..86d0edc3 100644
--- a/src/OpenMesh/Core/Utils/BaseProperty.hh
+++ b/src/OpenMesh/Core/Utils/BaseProperty.hh
@@ -55,7 +55,7 @@ namespace OpenMesh {
     Abstract class defining the basic interface of a dynamic property.
 **/
 
-class BaseProperty
+class OPENMESHDLLEXPORT BaseProperty
 {
 public:
 
diff --git a/src/OpenMesh/Core/Utils/Endian.hh b/src/OpenMesh/Core/Utils/Endian.hh
index 82887291..ed0d45c7 100644
--- a/src/OpenMesh/Core/Utils/Endian.hh
+++ b/src/OpenMesh/Core/Utils/Endian.hh
@@ -69,7 +69,7 @@ namespace OpenMesh {
 
 /**  Determine byte order of host system.
  */
-class Endian
+class OPENMESHDLLEXPORT Endian
 {
 public: