diff --git a/libs/ui/include/psemek/ui/spinbox.hpp b/libs/ui/include/psemek/ui/spinbox.hpp
index da4c0e89..b5d345be 100644
--- a/libs/ui/include/psemek/ui/spinbox.hpp
+++ b/libs/ui/include/psemek/ui/spinbox.hpp
@@ -26,7 +26,7 @@ namespace psemek::ui
 
 		using on_value_changed_callback = std::function<void(int)>;
 
-		virtual void on_value_changed(on_value_changed_callback callback);
+		virtual void on_value_changed(on_value_changed_callback callback, bool notify = true);
 
 		virtual struct label * label() { return nullptr; }
 
diff --git a/libs/ui/source/spinbox.cpp b/libs/ui/source/spinbox.cpp
index 97c8e5c2..11065f62 100644
--- a/libs/ui/source/spinbox.cpp
+++ b/libs/ui/source/spinbox.cpp
@@ -43,10 +43,11 @@ namespace psemek::ui
 			set_value(value_ - 1);
 	}
 
-	void spinbox::on_value_changed(on_value_changed_callback callback)
+	void spinbox::on_value_changed(on_value_changed_callback callback, bool notify)
 	{
 		on_value_changed_ = std::move(callback);
-		post_value_changed();
+		if (notify)
+			post_value_changed();
 	}
 
 	void spinbox::post_value_changed()