diff --git a/magick/option.c b/magick/option.c
index da584c4..7460c36 100644
--- a/magick/option.c
+++ b/magick/option.c
@@ -2134,7 +2134,7 @@
   {
     if (option_info[i].stealth != MagickFalse)
       continue;
-    (void) fprintf(file,"%s\n",option_info[i].mnemonic);
+    (void) FormatLocaleFile(file,"%s\n",option_info[i].mnemonic);
   }
   return(MagickTrue);
 }