diff --git a/icewm-preferences.patch b/icewm-preferences.patch
index 43c136f..79f3d06 100644
--- a/icewm-preferences.patch
+++ b/icewm-preferences.patch
@@ -44,11 +44,11 @@ Index: src/preferences
  
  #  Command to shutdown the system
 -# ShutdownCommand="/bin/sh -c "{ test -e /run/systemd/system && systemctl poweroff; } ||:""
-+ShutdownCommand="/bin/sh -c "systemctl poweroff ||:""
++ShutdownCommand="/bin/sh -c 'systemctl poweroff ||:'"
  
  #  Command to reboot the system
 -# RebootCommand="/bin/sh -c "{ test -e /run/systemd/system && systemctl reboot; } ||:""
-+RebootCommand="/bin/sh -c "systemctl reboot ||:""
++RebootCommand="/bin/sh -c 'systemctl reboot ||:'"
  
  #  Command to run on CPU status
  # CPUStatusCommand="xterm -name top -title Process\ Status -e top"
diff --git a/icewm.changes b/icewm.changes
index 7d6d729..31987f3 100644
--- a/icewm.changes
+++ b/icewm.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Aug 24 07:55:56 UTC 2016 - tyang@suse.com
+
+- Modify: icewm-preferences.patch
+  bnc#977233 modify the command to correct one.
+
 -------------------------------------------------------------------
 Thu Jun  2 11:30:11 UTC 2016 - tchvatal@suse.com
 
diff --git a/icewm.spec b/icewm.spec
index 4a899d0..7161298 100644
--- a/icewm.spec
+++ b/icewm.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package icewm
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2016 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed