--- a/widget/gtk/nsPrintSettingsGTK.cpp
+++ b/widget/gtk/nsPrintSettingsGTK.cpp
@@ -475,17 +475,17 @@ nsPrintSettingsGTK::GetPrinterName(char1
       gtkPrintName = gtk_printer_get_name(mGTKPrinter);
     } else {
       // This mimics what nsPrintSettingsImpl does when we try to Get before we Set
       nsXPIDLString nullPrintName;
       *aPrinter = ToNewUnicode(nullPrintName);
       return NS_OK;
     }
   }
-  *aPrinter = ToNewUnicode(nsDependentCString(gtkPrintName));
+  *aPrinter = ToNewUnicode(NS_ConvertUTF8toUTF16(gtkPrintName));
   return NS_OK;
 }
 
 NS_IMETHODIMP
 nsPrintSettingsGTK::SetPrinterName(const char16_t * aPrinter)
 {
   NS_ConvertUTF16toUTF8 gtkPrinter(aPrinter);