diff --git a/mptrack/MainFrm.cpp b/mptrack/MainFrm.cpp
index 7e042e53a61..b60d114ef3d 100644
--- a/mptrack/MainFrm.cpp
+++ b/mptrack/MainFrm.cpp
@@ -2613,6 +2613,7 @@ LRESULT CMainFrame::OnCustomKeyMsg(WPARAM wParam, LPARAM lParam)
 
 		//D'oh!! moddoc isn't a CWnd so we have to handle its messages and pass them on.
 
+		case kcFileAppend:
 		case kcFileSaveAs:
 		case kcFileSaveCopy:
 		case kcFileSaveAsWave: