diff --git a/src/kernel/qsound.h b/src/kernel/qsound.h
index d81d41f..dfcbfe6 100644
--- a/src/kernel/qsound.h
+++ b/src/kernel/qsound.h
@@ -96,7 +96,7 @@ private:
   QAuBucket is whatever you want.
 */
 
-class QAuBucket {
+class Q_EXPORT QAuBucket {
 public:
     virtual ~QAuBucket();
 };