diff --git a/xdelta.spec b/xdelta.spec
index 96bf779..d4e7ae6 100644
--- a/xdelta.spec
+++ b/xdelta.spec
@@ -1,7 +1,7 @@
 Summary: A binary file delta generator
 Name: xdelta
 Version: 3.0.7
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: GPLv2
 Group: Development/Tools
 Source0: http://xdelta.googlecode.com/files/xdelta3-%{version}.tar.gz
@@ -33,7 +33,8 @@ algorithm to replace the standard diff program used by RCS
 %patch2 -p2 -b .man-page-day
 
 %build
-autoreconf -v
+# fc21 - we need `autoreconf -fi` for ppc64le
+autoreconf -vfi
 %configure
 make %{?_smp_mflags} V=0
 
@@ -62,6 +63,9 @@ popd
 %{_mandir}/man1/xdelta*
 
 %changelog
+* Tue Mar 04 2014 Pavel Raiskup <praiskup@redhat.com> - 3.0.7-4
+- s/autoreconf -v/autoreconf -vfi/, per #1071980
+
 * Sun Aug 04 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 3.0.7-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild