diff --git a/src/fileio.c b/src/fileio.c
index 5fee4e0..41e5b5d 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5570,6 +5570,8 @@
  * allow_dirs, otherwise FALSE is put there -- webb.
  * Handle backslashes before special characters, like "\*" and "\ ".
  *
+ * no_bslash only makes a difference, when BACKSLASH_IN_FILENAME is defined
+ *
  * Returns NULL when out of memory.
  */
     char_u *