1 files changed, 2 insertions, 0 deletions
diff --git a/src/ui/slider.h b/src/ui/slider.h
index 0de9b3c..b0de011 100644
--- a/src/ui/slider.h
+++ b/src/ui/slider.h
@@ -26,6 +26,8 @@
 
 namespace Ui {
 
+class CButton;
+
 class CSlider : public CControl
 {
     public: