diff --git a/103grapheme.subx b/103grapheme.subx
index ef1f31c9..1941d49b 100644
--- a/103grapheme.subx
+++ b/103grapheme.subx
@@ -1,7 +1,7 @@
 # Use the built-in font to draw a grapheme to real screen.
 #
 # We need to do this in machine code because Mu doesn't have global variables
-# yet (for the start of video memory).
+# yet (for the start of the font).
 #
 # There are uncomfortable assumptions baked in here about english/latin
 # script. We convert the grid of pixels into a fixed-width grid of graphemes,