diff --git a/util/hb-ot-shape-closure.cc b/util/hb-ot-shape-closure.cc
index 77ca20135..33f531b37 100644
--- a/util/hb-ot-shape-closure.cc
+++ b/util/hb-ot-shape-closure.cc
@@ -39,7 +39,7 @@ struct shape_closure_consumer_t : option_group_t
     add_options (parser);
   }
 
-  void add_options (struct option_parser_t *parser)
+  void add_options (struct option_parser_t *parser) override
   {
     GOptionEntry entries[] =
     {
diff --git a/util/options.hh b/util/options.hh
index 83dbe3402..63360ca5f 100644
--- a/util/options.hh
+++ b/util/options.hh
@@ -129,13 +129,13 @@ struct view_options_t : option_group_t
 
     add_options (parser);
   }
-  virtual ~view_options_t ()
+  ~view_options_t () override
   {
     g_free (fore);
     g_free (back);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
   hb_bool_t annotate;
   char *fore;
@@ -165,7 +165,7 @@ struct shape_options_t : option_group_t
 
     add_options (parser);
   }
-  virtual ~shape_options_t ()
+  ~shape_options_t () override
   {
     g_free (direction);
     g_free (language);
@@ -174,7 +174,7 @@ struct shape_options_t : option_group_t
     g_strfreev (shapers);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
   void setup_buffer (hb_buffer_t *buffer)
   {
@@ -471,7 +471,7 @@ struct font_options_t : option_group_t
 
     add_options (parser);
   }
-  virtual ~font_options_t ()
+  ~font_options_t () override
   {
     g_free (font_file);
     free (variations);
@@ -479,7 +479,7 @@ struct font_options_t : option_group_t
     hb_font_destroy (font);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
   hb_font_t *get_font () const;
 
@@ -521,7 +521,7 @@ struct text_options_t : option_group_t
 
     add_options (parser);
   }
-  virtual ~text_options_t ()
+  ~text_options_t () override
   {
     g_free (text_before);
     g_free (text_after);
@@ -533,9 +533,9 @@ struct text_options_t : option_group_t
       fclose (fp);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
-  void post_parse (GError **error G_GNUC_UNUSED) {
+  void post_parse (GError **error G_GNUC_UNUSED) override {
     if (text && text_file)
       g_set_error (error,
 		   G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
@@ -572,7 +572,7 @@ struct output_options_t : option_group_t
 
     add_options (parser);
   }
-  virtual ~output_options_t ()
+  ~output_options_t () override
   {
     g_free (output_file);
     g_free (output_format);
@@ -580,9 +580,9 @@ struct output_options_t : option_group_t
       fclose (fp);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
-  void post_parse (GError **error G_GNUC_UNUSED)
+  void post_parse (GError **error G_GNUC_UNUSED) override
   {
     if (output_format)
       explicit_output_format = true;
@@ -627,7 +627,7 @@ struct format_options_t : option_group_t
     add_options (parser);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
   void serialize_unicode (hb_buffer_t  *buffer,
 			  GString      *gs);
@@ -678,12 +678,12 @@ struct subset_options_t : option_group_t
     add_options (parser);
   }
 
-  virtual ~subset_options_t ()
+  ~subset_options_t () override
   {
     hb_subset_input_destroy (input);
   }
 
-  void add_options (option_parser_t *parser);
+  void add_options (option_parser_t *parser) override;
 
   hb_subset_input_t *input;
 };