diff --git a/giflib.changes b/giflib.changes
index a7d237f..ad15bfc 100644
--- a/giflib.changes
+++ b/giflib.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jul  5 05:38:23 UTC 2017 - bwiedemann@suse.com
+
+- Keep timestamps before patch updates them to fix build-compare
+
 -------------------------------------------------------------------
 Fri May 13 15:50:28 UTC 2016 - rpm@fthiessen.de
 
diff --git a/giflib.spec b/giflib.spec
index 562ae3c..16ab5e9 100644
--- a/giflib.spec
+++ b/giflib.spec
@@ -74,6 +74,9 @@ have expired, giflib can again be used instead of libungif.
 
 %prep
 %setup -q
+for file in `find util -name "*.c"`; do
+	touch -r $file $file.stamp
+done
 %patch1 -p1
 %patch2 -p1
 %patch3 -p1
@@ -85,7 +88,6 @@ have expired, giflib can again be used instead of libungif.
 # this change is pointless unless we preserve the original
 # file modification time
 for file in `find util -name "*.c"`; do
-	touch -r $file $file.stamp;
 	sed -i -e s@'__DATE__ ",   " __TIME__'@__TIMESTAMP__@g $file;
     touch -r $file.stamp $file;
     rm -v $file.stamp