diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
index c3ea7612e..62335d027 100644
--- a/util/grub-mkconfig.in
+++ b/util/grub-mkconfig.in
@@ -301,7 +301,10 @@ and /etc/grub.d/* files or please file a bug report with
     exit 1
   else
     # none of the children aborted with error, install the new grub.cfg
+    oldumask=$(umask)
+    umask 077
     cat ${grub_cfg}.new > ${grub_cfg}
+    umask $oldumask
     rm -f ${grub_cfg}.new
   fi
 fi