1 files changed, 2 insertions, 1 deletions

diff --git a/src/buffer.c b/src/buffer.c
index ed53a09faa8..23db6c9ac5a 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -4464,7 +4464,8 @@ Each buffer has its own value of this variable.");
   DEFVAR_PER_BUFFER ("auto-fill-function", &current_buffer->auto_fill_function,
                      Qnil,
     "Function called (if non-nil) to perform auto-fill.\n\
-It is called after self-inserting a space or newline.\n\
+It is called after self-inserting any character specified in
+the `auto-fill-chars' table.\n\
 Each buffer has its own value of this variable.\n\
 NOTE: This variable is not a hook;\n\
 its value may not be a list of functions.");