diff --git a/xpra.changes b/xpra.changes
index 109c49f..e27b97a 100644
--- a/xpra.changes
+++ b/xpra.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Nov  4 23:48:14 UTC 2018 - Jan Engelhardt <jengelh@inai.de>
+
+- Make xpra-html5 subpackage noarch
+- Speed up find -exec
+
 -------------------------------------------------------------------
 Sun Nov  4 14:47:43 UTC 2018 - Luigi Baldoni <aloisio@gmx.com>
 
diff --git a/xpra.spec b/xpra.spec
index bf8adb9..d0626e7 100644
--- a/xpra.spec
+++ b/xpra.spec
@@ -108,6 +108,7 @@ Provides:       bundled(js-forge)
 Provides:       bundled(js-aurora)
 Provides:       bundled(js-broadway)
 Provides:       bundled(js-bencode)
+BuildArch:      noarch
 
 %description    html5
 This package adds websockify support to allow xpra to listen for http
@@ -118,10 +119,10 @@ connections, and also the xpra html5 client.
 %patch0 -p1
 # fix shebangs
 find -name '*.py' \
-     -exec sed -i '1{\@^#!/usr/bin/env python@d}' {} \;
+     -exec sed -i '1{\@^#!/usr/bin/env python@d}' {} +
 sed -i "1 s|^#!/usr/bin/env python\b|#!%__python2|" cups/xpraforwarder
 # fix python-bytecode-inconsistent-mtime warning
-find . -name '*.py' -exec touch -mat 1707141200 {} \;
+find . -name '*.py' -exec touch -mat 1707141200 {} +
 install -m0644 %{SOURCE1} -t xdg
 # set fillup dir
 sed -i 's|__FILLUPDIR__|%{_fillupdir}|' setup.py
@@ -164,7 +165,7 @@ install -pm 644 etc/xpra/nvenc.keys %{buildroot}%{_sysconfdir}/xpra
 
 # Ensure all .js files are not executable
 find %{buildroot}%{_datadir}/xpra/www/js -name '*.js' \
-    -exec chmod 0644 {} \;
+    -exec chmod 0644 {} +
 
 %suse_update_desktop_file -r xpra Network RemoteAccess
 %suse_update_desktop_file -r xpra-browser Network RemoteAccess