diff --git a/patchutils-args.patch b/patchutils-args.patch
new file mode 100644
index 0000000..76e7f1f
--- /dev/null
+++ b/patchutils-args.patch
@@ -0,0 +1,49 @@
+diff -U0 patchutils-0.3.3/ChangeLog.args patchutils-0.3.3/ChangeLog
+--- patchutils-0.3.3/ChangeLog.args	2013-04-02 11:42:17.000000000 +0100
++++ patchutils-0.3.3/ChangeLog	2013-04-11 12:46:59.396964337 +0100
+@@ -0,0 +1,5 @@
++2013-04-11  Tim Waugh  <twaugh@redhat.com>
++
++	* src/filterdiff.c: Don't show grepdiff-specific options in
++	help output for filterdiff/lsdiff (bug #948973).
++
+diff -up patchutils-0.3.3/src/filterdiff.c.args patchutils-0.3.3/src/filterdiff.c
+--- patchutils-0.3.3/src/filterdiff.c.args	2011-05-26 14:47:46.000000000 +0100
++++ patchutils-0.3.3/src/filterdiff.c	2013-04-11 12:46:59.397964342 +0100
+@@ -2,7 +2,7 @@
+  * filterdiff - extract (or exclude) a diff from a diff file
+  * lsdiff - show which files are modified by a patch
+  * grepdiff - show files modified by a patch containing a regexp
+- * Copyright (C) 2001, 2002, 2003, 2004, 2008, 2009, 2011 Tim Waugh <twaugh@redhat.com>
++ * Copyright (C) 2001, 2002, 2003, 2004, 2008, 2009, 2011, 2013 Tim Waugh <twaugh@redhat.com>
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU General Public License as published by
+@@ -1068,7 +1068,7 @@ const char * syntax_str =
+ "            remove all comments (non-diff lines) from output (filterdiff)\n"
+ "  -z, --decompress\n"
+ "            decompress .gz and .bz2 files\n"
+-"  -n, --line-number\n"
++"  -n, --line-number (lsdiff, grepdiff)\n"
+ "            show line numbers (lsdiff, grepdiff)\n"
+ "  --number-files (lsdiff, grepdiff)\n"
+ "            show file numbers, for use with filterdiff's --files option (lsdiff, grepdiff)\n"
+@@ -1085,15 +1085,15 @@ const char * syntax_str =
+ "            prefix pathnames in old files with PREFIX\n"
+ "  --addnewprefix=PREFIX\n"
+ "            prefix pathnames in new files with PREFIX\n"
+-"  -s, --status\n"
++"  -s, --status (lsdiff)\n"
+ "            show file additions and removals (lsdiff)\n"
+ "  -v, --verbose\n"
+ "            verbose output -- use more than once for extra verbosity\n"
+-"  -E, --extended-regexp\n"
++"  -E, --extended-regexp (grepdiff)\n"
+ "            use extended regexps, like egrep (grepdiff)\n"
+ "  -E, --empty-files-as-absent (lsdiff)\n"
+ "            treat empty files as absent (lsdiff)\n"
+-"  -f FILE, --file=FILE\n"
++"  -f FILE, --file=FILE (grepdiff)\n"
+ "            read regular expressions from FILE (grepdiff)\n"
+ "  --filter  run as 'filterdiff' (grepdiff, lsdiff)\n"
+ "  --list    run as 'lsdiff' (filterdiff, grepdiff)\n"
diff --git a/patchutils.spec b/patchutils.spec
index f807f63..49aa259 100644
--- a/patchutils.spec
+++ b/patchutils.spec
@@ -6,6 +6,7 @@ License: GPLv2+
 Group: Applications/System
 URL: http://cyberelk.net/tim/patchutils/
 Source0: http://cyberelk.net/tim/data/patchutils/stable/%{name}-%{version}.tar.xz
+Patch1: patchutils-args.patch
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Obsoletes: interdiff <= 0.0.10
 Provides: interdiff = 0.0.10
@@ -23,6 +24,9 @@ patches, and simply listing the files modified by a patch.
 %prep
 %setup -q
 
+# Fixed help output (bug #948973).
+%patch1 -p1 -b .args
+
 %build
 touch doc/patchutils.xml
 %configure
@@ -46,6 +50,7 @@ rm -rf %{buildroot}
 
 %changelog
 * Thu Apr 11 2013 Tim Waugh <twaugh@redhat.com> 0.3.3-2
+- Fixed help output (bug #948973).
 - Fixed changelog dates.
 
 * Tue Apr  2 2013 Tim Waugh <twaugh@redhat.com> 0.3.3-1