diff --git a/src/cairo-image-surface.c b/src/cairo-image-surface.c
index 982bf45d0..2a2d59d41 100644
--- a/src/cairo-image-surface.c
+++ b/src/cairo-image-surface.c
@@ -998,7 +998,7 @@ const cairo_surface_backend_t _cairo_image_surface_backend = {
     NULL, /* show_page */
 
     _cairo_image_surface_get_extents,
-    NULL,
+    _cairo_image_surface_get_font_options,
 
     NULL, /* flush */
     NULL,