diff --git a/THANKS b/THANKS
index e325e38b4..222bcfd3a 100644
--- a/THANKS
+++ b/THANKS
@@ -74,6 +74,7 @@ For fixes or providing information which led to a fix:
           David Fang
           Barry Fishman
        Kevin J. Fletcher
+ Josep Portella Florit
         Charles Gagnon
              Fu-gangqiang
           Aidan Gauland
diff --git a/doc/ref/api-io.texi b/doc/ref/api-io.texi
index a0619df05..f1170eb2c 100644
--- a/doc/ref/api-io.texi
+++ b/doc/ref/api-io.texi
@@ -2131,6 +2131,7 @@ index @var{start} and limiting to @var{count} octets.
 
 @deffn {Scheme Procedure} put-char port char
 Writes @var{char} to the port. The @code{put-char} procedure returns
+an unspecified value.
 @end deffn
 
 @deffn {Scheme Procedure} put-string port string