diff --git a/src/Project.h b/src/Project.h
index f485f1bd8..29d9173e6 100644
--- a/src/Project.h
+++ b/src/Project.h
@@ -78,7 +78,6 @@ class Scrubber;
 class ScrubbingToolBar;
 class SelectionBar;
 class SpectralSelectionBar;
-class Toolbar;
 class ToolManager;
 class ToolsToolBar;
 class TranscriptionToolBar;