diff --git a/src/slic3r/GUI/PhysicalPrinterDialog.cpp b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
index 5e4e83ce2e..621248cb11 100644
--- a/src/slic3r/GUI/PhysicalPrinterDialog.cpp
+++ b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
@@ -292,7 +292,7 @@ void PhysicalPrinterDialog::build_printhost_settings(ConfigOptionsGroup* m_optgr
         Line cafile_hint{ "", "" };
         cafile_hint.full_width = 1;
         cafile_hint.widget = [ca_file_hint](wxWindow* parent) {
-            auto txt = new wxStaticText(parent, wxID_ANY, ca_file_hint);
+            auto txt = new wxStaticText(parent, wxID_ANY, from_u8(ca_file_hint));
             auto sizer = new wxBoxSizer(wxHORIZONTAL);
             sizer->Add(txt);
             return sizer;