diff --git a/ui/effects/animations.h b/ui/effects/animations.h
index bdc3a45..a918cfc 100644
--- a/ui/effects/animations.h
+++ b/ui/effects/animations.h
@@ -10,6 +10,7 @@
 
 #include <crl/crl_time.h>
 #include <rpl/lifetime.h>
+#include <QtCore/QObject>
 
 namespace Ui {
 namespace Animations {