diff --git a/libs/ui/include/psemek/ui/spinbox.hpp b/libs/ui/include/psemek/ui/spinbox.hpp
index c31a4a2b..7516cdec 100644
--- a/libs/ui/include/psemek/ui/spinbox.hpp
+++ b/libs/ui/include/psemek/ui/spinbox.hpp
@@ -11,7 +11,7 @@ namespace psemek::ui
 		: element
 	{
 		virtual int value() const { return value_; }
-		virtual void set_value(int v);
+		virtual void set_value(int v, bool notify = true);
 
 		virtual geom::interval<int> value_range() const { return value_range_; }
 		virtual void set_value_range(geom::interval<int> i);
diff --git a/libs/ui/source/spinbox.cpp b/libs/ui/source/spinbox.cpp
index f0454009..97c8e5c2 100644
--- a/libs/ui/source/spinbox.cpp
+++ b/libs/ui/source/spinbox.cpp
@@ -3,13 +3,15 @@
 namespace psemek::ui
 {
 
-	void spinbox::set_value(int v)
+	void spinbox::set_value(int v, bool notify)
 	{
 		v = geom::clamp(v, value_range_);
 		if (v != value_)
 		{
 			value_ = v;
-			post_value_changed();
+
+			if (notify)
+				post_value_changed();
 		}
 	}