diff --git a/src/cff/cffgload.c b/src/cff/cffgload.c
index 752c18ed9..4f375a612 100644
--- a/src/cff/cffgload.c
+++ b/src/cff/cffgload.c
@@ -2942,6 +2942,7 @@
       cff_decoder_init( &decoder, face, size, glyph, hinting,
                         FT_LOAD_TARGET_MODE( load_flags ) );
 
+      /* this is for pure CFFs */
       if ( load_flags & FT_LOAD_ADVANCE_ONLY )
         decoder.width_only = TRUE;