diff --git a/lua/lspconfig/ui/windows.lua b/lua/lspconfig/ui/windows.lua
index dc02c9ef8e..f52f17a8d5 100644
--- a/lua/lspconfig/ui/windows.lua
+++ b/lua/lspconfig/ui/windows.lua
@@ -86,7 +86,7 @@ function win_float.percentage_range_window(col_range, row_range, options)
 
   win_opts.height = math.ceil(vim.o.lines * height_percentage)
   win_opts.row = math.ceil(vim.o.lines * row_start_percentage)
-  win_opts.border = options.border or 'none'
+  win_opts.border = options.border or 'rounded'
 
   local width_percentage, col_start_percentage
   if type(col_range) == 'number' then