diff --git a/src/slic3r/GUI/GUI.cpp b/src/slic3r/GUI/GUI.cpp
index 2b5c12ba3f..a74fd7f3dd 100644
--- a/src/slic3r/GUI/GUI.cpp
+++ b/src/slic3r/GUI/GUI.cpp
@@ -344,7 +344,7 @@ void show_substitutions_info(const PresetsConfigSubstitutions& presets_config_su
 	};
 
 	for (const PresetConfigSubstitutions& substitution : presets_config_substitutions) {
-		changes += "\n\n" + format_wxstr("%1% : %2%", preset_type_name(substitution.preset_type), bold_string(substitution.preset_name));
+		changes += "\n\n" + format_wxstr("%1% : %2%", preset_type_name(substitution.preset_type), bold_string(from_u8(substitution.preset_name)));
 		if (!substitution.preset_file.empty())
 			changes += format_wxstr(" (%1%)", substitution.preset_file);