[util] Minor
diff --git a/util/options.cc b/util/options.cc
index 5536820..44b11c8 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -374,7 +374,7 @@
   {
     {"font-file",	0, 0, G_OPTION_ARG_STRING,	&this->font_file,		"Set font file-name",			"filename"},
     {"face-index",	0, 0, G_OPTION_ARG_INT,		&this->face_index,		"Set face index (default: 0)",		"index"},
-    {"font-funcs",	0, 0, G_OPTION_ARG_STRING,	&this->font_funcs,		text,					"format"},
+    {"font-funcs",	0, 0, G_OPTION_ARG_STRING,	&this->font_funcs,		text,					"impl"},
     {NULL}
   };
   parser->add_group (entries,