diff --git a/gpgme/ChangeLog b/gpgme/ChangeLog
index 3192ad01..d92da6c9 100644
--- a/gpgme/ChangeLog
+++ b/gpgme/ChangeLog
@@ -1,3 +1,7 @@
+2004-04-22  Marcus Brinkmann  <marcus@g10code.de>
+
+	* gpgme.m4: Quote first argument to AC_DEFUN.
+
 2004-04-21  Werner Koch  <wk@gnupg.org>
 
 	* key.c (gpgme_key_unref): Allow passing NULL like free does.
diff --git a/gpgme/gpgme.m4 b/gpgme/gpgme.m4
index 5cdbca84..519393bf 100644
--- a/gpgme/gpgme.m4
+++ b/gpgme/gpgme.m4
@@ -1,7 +1,7 @@
 dnl Autoconf macros for libgpgme
 dnl $Id$
 
-AC_DEFUN(_AM_PATH_GPGME_CONFIG,
+AC_DEFUN([_AM_PATH_GPGME_CONFIG],
 [ AC_ARG_WITH(gpgme-prefix,
             AC_HELP_STRING([--with-gpgme-prefix=PFX],
                            [prefix where GPGME is installed (optional)]),