diff --git a/src/ui/form/opt/pages/apps/appscolumn.h b/src/ui/form/opt/pages/apps/appscolumn.h
index 7aefdfa77..8bba58609 100644
--- a/src/ui/form/opt/pages/apps/appscolumn.h
+++ b/src/ui/form/opt/pages/apps/appscolumn.h
@@ -4,6 +4,7 @@
 #include <QWidget>
 
 QT_FORWARD_DECLARE_CLASS(QLabel)
+QT_FORWARD_DECLARE_CLASS(QToolButton)
 
 class PlainTextEdit;