64184e02e5de4b33b61349478b5be6353114c32b
diff --git a/gtk/gtkstock.h b/gtk/gtkstock.h
index 2cbe0b6..57aa3e3 100644
--- a/gtk/gtkstock.h
+++ b/gtk/gtkstock.h
@@ -41,11 +41,11 @@ typedef struct _GtkStockItem GtkStockItem;
 
 struct _GtkStockItem
 {
-  gchar *stock_id;
-  gchar *label;
+  const gchar *stock_id;
+  const gchar *label;
   GdkModifierType modifier;
   guint keyval;
-  gchar *translation_domain;
+  const gchar *translation_domain;
 };
 
 void     gtk_stock_add        (const GtkStockItem  *items,
