diff --git a/gzip.changes b/gzip.changes
index 0053f20..9da2c11 100644
--- a/gzip.changes
+++ b/gzip.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed May 31 02:54:52 UTC 2017 - bwiedemann@suse.com
+
+- Make build reproducible in spite of gcc profile based optimizations
+  (boo#1040589)
+
 -------------------------------------------------------------------
 Tue May 30 09:59:59 UTC 2017 - src@posteo.de
 
diff --git a/gzip.spec b/gzip.spec
index c9b9e02..62a9724 100644
--- a/gzip.spec
+++ b/gzip.spec
@@ -66,7 +66,7 @@ profile_gzip()
 {
   tmpfile=$(mktemp)
   trap "rm -f $tmpfile $tmpfile.gz" EXIT
-  tar -cfd %{SOURCE0} > $tmpfile || true
+  xz -cd %{SOURCE0} > $tmpfile
   time ./gzip < $tmpfile > $tmpfile.gz
   time ./gzip -d < $tmpfile.gz > /dev/null
 }