1 files changed, 2 insertions, 2 deletions
diff --git a/qpid/cpp/include/qpid/types/Variant.h b/qpid/cpp/include/qpid/types/Variant.h
index d9260133a7..4459fc4123 100644
--- a/qpid/cpp/include/qpid/types/Variant.h
+++ b/qpid/cpp/include/qpid/types/Variant.h
@@ -36,7 +36,7 @@ namespace types {
 /**
  * Thrown when an illegal conversion of a variant is attempted.
  */
-struct InvalidConversion : public Exception 
+struct QPID_TYPES_CLASS_EXTERN InvalidConversion : public Exception 
 {
     InvalidConversion(const std::string& msg);
 };
@@ -67,7 +67,7 @@ class VariantImpl;
 /**
  * Represents a value of variable type.
  */
-class Variant
+class QPID_TYPES_CLASS_EXTERN Variant
 {
   public:
     typedef std::map<std::string, Variant> Map;