diff --git a/plugin/makecols.vim b/plugin/makecols.vim
index d835600..173f062 100644
--- a/plugin/makecols.vim
+++ b/plugin/makecols.vim
@@ -25,7 +25,7 @@ endfunction
 
 
 
-vnoremap mc :call <SID>makecols()<CR>
+vnoremap <silent> mc :<C-U>call <SID>makecols()<CR>