1 files changed, 1 insertions, 1 deletions
diff --git a/qpid/cpp/include/qpid/management/Mutex.h b/qpid/cpp/include/qpid/management/Mutex.h
index 67ae04bae9..59b3464f54 100644
--- a/qpid/cpp/include/qpid/management/Mutex.h
+++ b/qpid/cpp/include/qpid/management/Mutex.h
@@ -48,7 +48,7 @@ namespace qpid {
             L& mutex;
         };
 
-        class Mutex {
+        class QPID_COMMON_CLASS_EXTERN Mutex {
         public:
             typedef ScopedLockTemplate<Mutex> ScopedLock;
             typedef ScopedUnlockTemplate<Mutex> ScopedUnlock;