diff --git a/src/misc1.c b/src/misc1.c
index 3125dfe341fa3ffbc86479864853d16b47b7dc69..b3a18e5faf888c98c0fec50eb0f5010295efc586 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -3594,6 +3594,7 @@ expand_env_esc(src, dst, dstlen, esc)
 /*
  * Vim's version of getenv().
  * Special handling of $HOME, $VIM and $VIMRUNTIME.
+ * Also does ACP to 'enc' conversion for Win32.
  */
     char_u *
 vim_getenv(name, mustfree)