diff --git a/src/toolbars/ControlToolBar.h b/src/toolbars/ControlToolBar.h
index 7245a85c6..c9a27c650 100644
--- a/src/toolbars/ControlToolBar.h
+++ b/src/toolbars/ControlToolBar.h
@@ -24,6 +24,7 @@ class wxKeyEvent;
 class wxTimer;
 class wxTimerEvent;
 class wxWindow;
+class wxStatusBar;
 
 class AButton;
 class AudacityProject;