diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 73700387436..07a9eef04be 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,3 +33,7 @@ Pull requests with enhancements, bugfixes or new profiles are very welcome.
 If you want to write a new profile, the easiest way to do this is to use the
 [profile template](https://github.com/netblue30/firejail/blob/master/etc/templates/profile.template).
 If you have already written a profile, please make sure it follows the rules described in the template.
+
+# Editing the wiki
+
+You are highly encouraged to add your own tips and tricks to the [wiki](https://github.com/netblue30/firejail/wiki).
diff --git a/etc/skypeforlinux.profile b/etc/skypeforlinux.profile
index eae7dada0b9..8a45f2465c6 100644
--- a/etc/skypeforlinux.profile
+++ b/etc/skypeforlinux.profile
@@ -25,7 +25,7 @@ nonewprivs
 noroot
 notv
 protocol unix,inet,inet6,netlink
-seccomp
+seccomp.drop @clock,@cpu-emulation,@debug,@module,@obsolete,@raw-io,@reboot,@resources,@swap,acct,add_key,bpf,fanotify_init,io_cancel,io_destroy,io_getevents,io_setup,io_submit,ioprio_set,kcmp,keyctl,mount,name_to_handle_at,nfsservctl,ni_syscall,open_by_handle_at,pivot_root,remap_file_pages,request_key,setdomainname,sethostname,syslog,umount,umount2,userfaultfd,vhangup,vmsplice
 shell none
 
 disable-mnt