diff --git a/autoload/airline.vim b/autoload/airline.vim
index ae1e3d4..325c852 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -19,9 +19,7 @@ endfunction
 
 function! airline#add_statusline_funcref(function)
   if index(g:airline_statusline_funcrefs, a:function) >= 0
-    echohl WarningMsg
-    echo 'The airline statusline funcref '.string(a:function).' has already been added.'
-    echohl NONE
+    call airline#util#warning('The airline statusline funcref %s has already been added.', string(a:function))
     return
   endif
   call add(g:airline_statusline_funcrefs, a:function)