diff --git a/config/nvim/nifoc/diagnostic.fnl b/config/nvim/nifoc/diagnostic.fnl
index 71bb853..c83e5b6 100644
--- a/config/nvim/nifoc/diagnostic.fnl
+++ b/config/nvim/nifoc/diagnostic.fnl
@@ -7,7 +7,7 @@
     (vim.diagnostic.config {:underline true
                             :virtual_text false
                             :signs true
-                            :float {:border :rounded}
+                            :float {:border :rounded :source true}
                             :update_in_insert false
                             :severity_sort true})
     (cmd "sign define DiagnosticSignError text= texthl=DiagnosticSignError linehl= numhl=DiagnosticSignError")