1 files changed, 1 insertions, 0 deletions

diff --git a/src/font.c b/src/font.c
index cfc48523d12..6619abe6081 100644
--- a/src/font.c
+++ b/src/font.c
@@ -3395,6 +3395,7 @@ font_find_for_lface (f, attrs, spec, c)
     {
       Lisp_Object alters
         = Fassoc_string (val, Vface_alternative_font_family_alist,
+                         /* Font family names are case-sensitive under NS. */
 #ifndef HAVE_NS
                          Qt
 #else