diff --git a/taglib/xm/xmproperties.h b/taglib/xm/xmproperties.h
index 9b6624a7..e87cb7f8 100644
--- a/taglib/xm/xmproperties.h
+++ b/taglib/xm/xmproperties.h
@@ -28,7 +28,7 @@
 
 namespace TagLib {
   namespace XM {
-    class Properties : public AudioProperties {
+    class TAGLIB_EXPORT Properties : public AudioProperties {
       friend class File;
     public:
       /*! Flag bits. */