diff --git a/src/cairo-image-surface.c b/src/cairo-image-surface.c
index 3b7768a6f..359685e25 100644
--- a/src/cairo-image-surface.c
+++ b/src/cairo-image-surface.c
@@ -1252,15 +1252,15 @@ const cairo_surface_backend_t cairo_image_surface_backend = {
     _cairo_image_surface_get_font_options,
     NULL, /* flush */
     NULL, /* mark_dirty_rectangle */
-    NULL, //* font_fini */
-    NULL, //* glyph_fini */
+    NULL, /* font_fini */
+    NULL, /* glyph_fini */
 
     NULL, /* paint */
     NULL, /* mask */
     NULL, /* stroke */
     NULL, /* fill */
     NULL, /* show_glyphs */
-    NULL,  /* snapshot */
+    NULL, /* snapshot */
     NULL, /* is_similar */
 
     _cairo_image_surface_reset