diff --git a/init.lua b/init.lua
index f6140411..1f7a934b 100644
--- a/init.lua
+++ b/init.lua
@@ -168,7 +168,9 @@ end, { desc = 'Go to previous [D]iagnostic message' })
 vim.keymap.set('n', ']d', function()
   vim.diagnostic.goto_next { float = { source = true } }
 end, { desc = 'Go to next [D]iagnostic message' })
-vim.keymap.set('n', '<leader>e', vim.diagnostic.open_float, { desc = 'Show diagnostic [E]rror messages' })
+vim.keymap.set('n', '<leader>e', function()
+  vim.diagnostic.open_float { source = true }
+end, { desc = 'Show diagnostic [E]rror messages' })
 vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist, { desc = 'Open diagnostic [Q]uickfix list' })
 
 -- Exit terminal mode in the builtin terminal with a shortcut that is a bit easier