diff --git a/libs/ui/source/element.cpp b/libs/ui/source/element.cpp
index 20ccfffa..ccb149b8 100644
--- a/libs/ui/source/element.cpp
+++ b/libs/ui/source/element.cpp
@@ -57,13 +57,16 @@ namespace psemek::ui
 
 	std::shared_ptr<style const> element::set_style(std::shared_ptr<struct style const> st)
 	{
-		if (style_)
-			style_->use_as_style.erase(this);
+		if (style_ != st)
+		{
+			if (style_)
+				style_->use_as_style.erase(this);
 
-		std::swap(st, style_);
+			std::swap(st, style_);
 
-		if (style_)
-			style_->use_as_style.insert(this);
+			if (style_)
+				style_->use_as_style.insert(this);
+		}
 
 		auto visitor = util::recursive([](auto && self, element * e) -> void {
 			e->merged_style_ = nullptr;
@@ -78,13 +81,16 @@ namespace psemek::ui
 
 	std::shared_ptr<struct style const> element::set_own_style(std::shared_ptr<struct style const> st)
 	{
-		if (style_)
-			style_->use_as_own_style.erase(this);
+		if (style_ != st)
+		{
+			if (style_)
+				style_->use_as_own_style.erase(this);
 
-		std::swap(st, own_style_);
+			std::swap(st, own_style_);
 
-		if (style_)
-			style_->use_as_own_style.insert(this);
+			if (style_)
+				style_->use_as_own_style.insert(this);
+		}
 
 		auto visitor = util::recursive([](auto && self, element * e) -> void {
 			e->merged_style_ = nullptr;