diff --git a/src/DirManager.cpp b/src/DirManager.cpp
index 5278ce916..71922a395 100644
--- a/src/DirManager.cpp
+++ b/src/DirManager.cpp
@@ -400,7 +400,7 @@ DirManager::DirManager()
    srand(time(NULL));
 
    // Set up local temp subdir
-   // Previously, Audacity just na med project temp directories "project0",
+   // Previously, Audacity just named project temp directories "project0",
    // "project1" and so on. But with the advent of recovery code, we need a
    // unique name even after a crash. So we create a random project index
    // and make sure it is not used already. This will not pose any performance
diff --git a/src/WaveTrack.h b/src/WaveTrack.h
index e870434aa..7d4e2825c 100644
--- a/src/WaveTrack.h
+++ b/src/WaveTrack.h
@@ -160,6 +160,10 @@ private:
 
    // Make another track copying format, rate, color, etc. but containing no
    // clips
+   // It is important to pass the correct DirManager (that for the project
+   // which will own the copy) in the unusual case that a track is copied from
+   // another project or the clipboard.  For copies within one project, the
+   // default will do.
    Holder EmptyCopy(
       const std::shared_ptr<DirManager> &pDirManager = {} ) const;