diff --git a/lua/base46/init.lua b/lua/base46/init.lua
index f46f0a2..d1a6613 100644
--- a/lua/base46/init.lua
+++ b/lua/base46/init.lua
@@ -47,7 +47,7 @@ M.extend_default_hl = function(highlights, integration_name)
   local polish_hl = M.get_theme_tb "polish_hl"
 
   -- polish themes
-  if polish_hl[integration_name] then
+  if polish_hl and polish_hl[integration_name] then
     highlights = M.merge_tb(highlights, polish_hl[integration_name])
   end