diff --git a/putty.changes b/putty.changes
index 8768c51..d7168da 100644
--- a/putty.changes
+++ b/putty.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Mar  8 18:35:39 UTC 2016 - bwiedemann@suse.com
+
+- Add reproducible.patch to fix build-compare
+
 -------------------------------------------------------------------
 Tue Mar  8 16:43:24 UTC 2016 - jengelh@inai.de
 
diff --git a/putty.spec b/putty.spec
index 93a84dc..961e9fc 100644
--- a/putty.spec
+++ b/putty.spec
@@ -30,6 +30,8 @@ Source:         http://the.earth.li/~sgtatham/putty/latest/%name-%version.tar.gz
 Source2:        http://the.earth.li/~sgtatham/putty/latest/%name-%version.tar.gz.gpg
 Source4:        %name.keyring
 Patch1:         putty-03-config.diff
+# PATCH-FIX-TO-UPSTREAM: bmwiedemann -- drop build timestamps from png
+Patch2:         reproducible.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  ImageMagick
 BuildRequires:  gtk2-devel
@@ -45,6 +47,7 @@ serial console client.
 %prep
 %setup -q
 %patch -P 1 -p1
+%patch2 -p1
 
 %build
 %configure
diff --git a/reproducible.patch b/reproducible.patch
new file mode 100644
index 0000000..8b88948
--- /dev/null
+++ b/reproducible.patch
@@ -0,0 +1,11 @@
+--- putty-0.66/icons/mkicon.py.orig	2015-11-07 10:16:40.000000000 +0000
++++ putty-0.66/icons/mkicon.py	2016-03-08 18:34:34.600917451 +0000
+@@ -912,7 +912,7 @@
+     assert minx >= 0 and miny >= 0 and maxx <= width and maxy <= width
+ 
+     block = render(canvas, 0, 0, width, width)
+-    p = os.popen("convert -depth 8 -size %dx%d rgba:- %s" % (width,width,fname), "w")
++    p = os.popen("convert -strip -depth 8 -size %dx%d rgba:- %s" % (width,width,fname), "w")
+     assert len(block) == width
+     for line in block:
+         assert len(line) == width