diff --git a/m4/ChangeLog b/m4/ChangeLog
index ae2c584df..a3d9b9cbe 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,5 +1,8 @@
 2006-07-11  David Shaw  <dshaw@jabberwocky.com>
 
+	* tar-ustar.m4: Not all greps know the -q (quiet) flag, so
+	redirect to /dev/null instead.
+
 	* tar-ustar.m4: Pass tar data through strings so that greps that
 	don't grep in binary files (Solaris) can detect the string.  Noted
 	by Mark Davies.
diff --git a/m4/tar-ustar.m4 b/m4/tar-ustar.m4
index 7cc1c8926..5ef2e16e4 100644
--- a/m4/tar-ustar.m4
+++ b/m4/tar-ustar.m4
@@ -1,5 +1,5 @@
 dnl Check for a tar program that speaks ustar format
-dnl Copyright (C) 2005 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2006 Free Software Foundation, Inc.
 dnl
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
@@ -27,7 +27,7 @@ AC_DEFUN([GNUPG_CHECK_USTAR],
      if test x$_mytar != x ; then
         AC_MSG_CHECKING([whether $_mytar speaks USTAR])
         echo hithere > conftest.txt
-        $_mytar -cf - conftest.txt | strings | grep -q ustar
+        $_mytar -cf - conftest.txt | strings | grep ustar > /dev/null
         _tar_bad=$?
         rm conftest.txt