1 files changed, 5 insertions, 2 deletions
diff --git a/muse2/muse/functions.h b/muse2/muse/functions.h
index 77777f04..2cf9c245 100644
--- a/muse2/muse/functions.h
+++ b/muse2/muse/functions.h
@@ -30,14 +30,15 @@
 
 class QString;
 class QMimeData;
-class Undo;
-
 
 #define FUNCTION_RANGE_ONLY_SELECTED 1
 #define FUNCTION_RANGE_ONLY_BETWEEN_MARKERS 2
 
 
 
+namespace MusECore {
+class Undo;
+
 std::set<Part*> partlist_to_set(PartList* pl);
 std::set<Part*> part_to_set(Part* p);
 std::map<Event*, Part*> get_events(const std::set<Part*>& parts, int range);
@@ -102,4 +103,6 @@ void expand_parts(int raster=-1);
 void schedule_resize_all_same_len_clone_parts(Part* part, unsigned new_len, Undo& operations);
 void clean_parts();
 
+} // namespace MusECore
+
 #endif