diff --git a/demos/gtk-demo/fontrendering.c b/demos/gtk-demo/fontrendering.c
index 0901de0fb9..fa3fb94082 100644
--- a/demos/gtk-demo/fontrendering.c
+++ b/demos/gtk-demo/fontrendering.c
@@ -1,6 +1,11 @@
 /* Pango/Font Rendering
  *
- * Demonstrates various aspects of font rendering.
+ * Demonstrates various aspects of font rendering,
+ * such as hinting, antialiasing and grid alignment.
+ *
+ * The demo lets you explore font rendering options
+ * interactively to get a feeling for they affect the
+ * shape and positioning of the glyphs.
  */
 
 #include <gtk/gtk.h>