diff --git a/mapping.vim b/mapping.vim
index fabc268..8f82e58 100644
--- a/mapping.vim
+++ b/mapping.vim
@@ -31,9 +31,10 @@ nnoremap <silent> g[ <cmd>lua vim.diagnostic.goto_prev()<CR>
 nnoremap <silent> g] <cmd>lua vim.diagnostic.goto_next()<CR>
 nnoremap <silent> gE <cmd>lua vim.diagnostic.setloclist()<CR>
 
-" work with Trouble to view lists of diagnostic warnings/ennoremap <leader>xx <cmd>TroubleToggle<cr>
+" work with Trouble to view lists of diagnostic warnings/errors
+nnoremap <leader>xx <cmd>TroubleToggle<cr>
 nnoremap <leader>xw <cmd>TroubleToggle workspace_diagnostics<cr>
 nnoremap <leader>xd <cmd>TroubleToggle document_diagnostics<cr>
 nnoremap <leader>xq <cmd>TroubleToggle quickfix<cr>
 nnoremap <leader>xl <cmd>TroubleToggle loclist<cr>
-nnoremap gR <cmd>TroubleToggle lsp_references<cr>rrors
+nnoremap gR <cmd>TroubleToggle lsp_references<cr>
diff --git a/plug.vim b/plug.vim
index 4e182f9..cb4f95c 100644
--- a/plug.vim
+++ b/plug.vim
@@ -15,6 +15,8 @@ Plug 'mbbill/undotree'
 Plug 'fneu/breezy'
 " diagnostics display
 Plug 'folke/trouble.nvim'
+" icons for Trouble
+Plug 'kyazdani42/nvim-web-devicons'
 
 
 " files, folders, projects, etc.