diff --git a/libs/ui/source/label.cpp b/libs/ui/source/label.cpp
index e9a30880..ebb1cdae 100644
--- a/libs/ui/source/label.cpp
+++ b/libs/ui/source/label.cpp
@@ -40,7 +40,7 @@ namespace psemek::ui
 		if (tag == "bold" || tag == "uline" || tag == "strike")
 		{
 			if (attribute)
-				throw std::runtime_error("tag [" + std::string(tag) + " doesn't support attributes");
+				throw std::runtime_error("tag [" + tag + "] doesn't support attributes");
 		}
 		else if (tag == "color")
 		{