Spelling fixes.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fns.c b/src/fns.c
index 04b51d10d9b..3154db62ec7 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -3254,7 +3254,7 @@ DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string,
 
 /* Base64-decode the data at FROM of LENGTH bytes into TO.  If
    MULTIBYTE is nonzero, the decoded result should be in multibyte
-   form.  If NCHARS_RETRUN is not NULL, store the number of produced
+   form.  If NCHARS_RETURN is not NULL, store the number of produced
    characters in *NCHARS_RETURN.  */
 
 static EMACS_INT