diff --git a/gpgme/ChangeLog b/gpgme/ChangeLog
index 70f9ec82..93e2e3c2 100644
--- a/gpgme/ChangeLog
+++ b/gpgme/ChangeLog
@@ -1,5 +1,9 @@
 2003-09-30  Marcus Brinkmann  <marcus@g10code.de>
 
+	* gpgme.h (gpg_strerror_r): Change prototype to match
+	gpg_strerror_r change.
+	* error.c (gpg_strerror_r): Likewise, also update implementation.
+
 	* gpgme.c (gpgme_hash_algo_name): Change name of RMD160 to
 	RIPEMD160, name of TIGER to TIGER192, name of CRC32-RFC1510 to
 	CRC32RFC1510, and name of CRC24-RFC2440 to CRC24RFC2440.
diff --git a/gpgme/error.c b/gpgme/error.c
index aac2c282..b17bb093 100644
--- a/gpgme/error.c
+++ b/gpgme/error.c
@@ -32,14 +32,17 @@ gpgme_strerror (gpgme_error_t err)
 }
 
 
-/* Return a pointer to a string containing a description of the error
-   code in the error value ERR.  The buffer for the string is
-   allocated with malloc(), and has to be released by the user.  On
-   error, NULL is returned.  */
-char *
-gpgme_strerror_r (gpgme_error_t err)
+/* Return the error string for ERR in the user-supplied buffer BUF of
+   size BUFLEN.  This function is, in contrast to gpg_strerror,
+   thread-safe if a thread-safe strerror_r() function is provided by
+   the system.  If the function succeeds, 0 is returned and BUF
+   contains the string describing the error.  If the buffer was not
+   large enough, ERANGE is returned and BUF contains as much of the
+   beginning of the error string as fits into the buffer.  */
+int
+gpgme_strerror_r (gpg_error_t err, char *buf, size_t buflen)
 {
-  return gpg_strerror_r (err);
+  return gpg_strerror_r (err, buf, buflen);
 }
 
 
diff --git a/gpgme/gpgme.h b/gpgme/gpgme.h
index df9a8e7b..921d57e5 100644
--- a/gpgme/gpgme.h
+++ b/gpgme/gpgme.h
@@ -131,11 +131,14 @@ gpgme_err_source (gpgme_error_t err)
    code in the error value ERR.  This function is not thread safe.  */
 const char *gpgme_strerror (gpgme_error_t err);
 
-/* Return a pointer to a string containing a description of the error
-   code in the error value ERR.  The buffer for the string is
-   allocated with malloc(), and has to be released by the user.  On
-   error, NULL is returned.  */
-char *gpgme_strerror_r (gpgme_error_t err);
+/* Return the error string for ERR in the user-supplied buffer BUF of
+   size BUFLEN.  This function is, in contrast to gpg_strerror,
+   thread-safe if a thread-safe strerror_r() function is provided by
+   the system.  If the function succeeds, 0 is returned and BUF
+   contains the string describing the error.  If the buffer was not
+   large enough, ERANGE is returned and BUF contains as much of the
+   beginning of the error string as fits into the buffer.  */
+int gpgme_strerror_r (gpg_error_t err, char *buf, size_t buflen);
 
 
 /* Return a pointer to a string containing a description of the error