diff --git a/lazarus.changes b/lazarus.changes
index a05073f..ac32b89 100644
--- a/lazarus.changes
+++ b/lazarus.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri May  5 22:07:06 UTC 2017 - jengelh@inai.de
+
+- Avoid bashisms in %prep. Escape call involving "!" with single
+  quotes to really be sure that there is no history expansion.
+
 -------------------------------------------------------------------
 Tue May  2 04:56:49 UTC 2017 - bwiedemann@suse.com
 
diff --git a/lazarus.spec b/lazarus.spec
index c71e861..8587b4b 100644
--- a/lazarus.spec
+++ b/lazarus.spec
@@ -1,8 +1,7 @@
 #
 # spec file for package lazarus
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
-# Copyright (c) 2008-2009 oc2pus
+# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -21,10 +20,10 @@ Name:           lazarus
 Version:        1.6.2
 Release:        0
 # Please note that the LGPL is modified and this is not multi-licensed, but each component has a separate license chosen.
-License:        GPL-2.0 and LGPL-2.0 and MPL-1.1
 Summary:        FreePascal RAD IDE and Component Library
-Url:            http://www.lazarus.freepascal.org/
+License:        GPL-2.0 and LGPL-2.0 and MPL-1.1
 Group:          Development/Languages/Other
+Url:            http://www.lazarus.freepascal.org/
 Source0:        http://downloads.sourceforge.net/%{name}/%{name}-%{version}-0.tar.gz
 # PATCH-FEATURE-UPSTREAM http://mantis.freepascal.org/view.php?id=31364
 Source1:        https://raw.githubusercontent.com/hughsie/fedora-appstream/developerapps/appdata-extra/desktop/lazarus.appdata.xml
@@ -108,9 +107,9 @@ dos2unix examples/trayicon/wndtray.*
 chmod 644 docs/booth/ProdProgEntwMitOpenSourceSystems2007.odp
 if [[ $SOURCE_DATE_EPOCH ]] ; then
   datestr=$(date -u "-d@$SOURCE_DATE_EPOCH" +%Y/%m/%d)
-  sed -i -e "s!{\$I %%date%%}!'$datestr'!" \
+  sed -i -e 's!{\$I %%date%%}!'"'$datestr'"'!' \
     ide/ideinfodlg.pas ide/aboutfrm.pas ide/idefpcinfo.pas
-  touch -d@$SOURCE_DATE_EPOCH ide/ideinfodlg.pas ide/aboutfrm.pas ide/idefpcinfo.pas # reset source timestamps because they are embedded in compiled files
+  touch -d@"$SOURCE_DATE_EPOCH" ide/ideinfodlg.pas ide/aboutfrm.pas ide/idefpcinfo.pas # reset source timestamps because they are embedded in compiled files
 fi
 
 %build