diff -urN mcabber-1.0.4.orig/contrib/vim/mcabber_log-ftdetect.vim mcabber-1.0.4/contrib/vim/mcabber_log-ftdetect.vim
--- mcabber-1.0.4.orig/contrib/vim/mcabber_log-ftdetect.vim	2016-11-21 20:47:26.000000000 +0100
+++ mcabber-1.0.4/contrib/vim/mcabber_log-ftdetect.vim	2016-12-13 17:02:02.529854526 +0100
@@ -1,7 +1,7 @@
 "
 " Save this file in your ~/.vim/ftdetect/ folder
 
-function MCabber_log_ftdetect()
+function! MCabber_log_ftdetect()
     if getline(1) =~ '^\u. \d\{8}T\d\d:\d\d:\d\dZ \d\{3} '
       setlocal filetype=mcabber_log
     endif