I was trying to remap some keys to switch to the next buffer, but something doesn't work, I have these lines on my .vimrc file:

let mapleader="<Space>"
nnoremap <Leader>l :bn<CR>

Are those lines okay? or Is there something wrong?

I was trying to remap some keys to switch to the next buffer, but something doesn't work, I have these lines on my .vimrc file:

" Cambia tecla lider a <Space>
let mapleader="<Space>" 

" Switch to next buffer
nnoremap <Leader>l :bn<CR>

" Switch to previous buffer
nnoremap <Leader>h :bp<CR>

" Split the window
nnoremap <Leader>k :split<CR>

Are those lines okay? or Is there something wrong?

An observation: when I change <Leader> to <Space> it works.