diff --git a/taglib/toolkit/tstringlist.h b/taglib/toolkit/tstringlist.h
index ce42ac30..8961bd4e 100644
--- a/taglib/toolkit/tstringlist.h
+++ b/taglib/toolkit/tstringlist.h
@@ -106,7 +106,7 @@ namespace TagLib {
    * \related TagLib::StringList
    * Send the StringList to an output stream.
    */
-  std::ostream &operator<<(std::ostream &s, const TagLib::StringList &l);
+  TAGLIB_EXPORT std::ostream &operator<<(std::ostream &s, const TagLib::StringList &l);
 
 }