diff --git a/lua/noice/util/nui.lua b/lua/noice/util/nui.lua
index d54a8c0..60811cd 100644
--- a/lua/noice/util/nui.lua
+++ b/lua/noice/util/nui.lua
@@ -94,6 +94,9 @@ function M.normalize_popup_options(opts)
   if opts.border and (not opts.border.style or opts.border.style == "none" or opts.border.style == "shadow") then
     opts.border.text = nil
   end
+  if opts.border and opts.border.style == "shadow" then
+    opts.border.padding = nil
+  end
   return opts
 end