diff --git a/script/parser/guide.lua b/script/parser/guide.lua
index 8f92b9b74..050dcb4d6 100644
--- a/script/parser/guide.lua
+++ b/script/parser/guide.lua
@@ -1013,6 +1013,20 @@ local function stepRefOfDocType(status, obj, mode)
         if not name or not status.interface.docType then
             return results
         end
+        if name == 'nil'
+        or name == 'any'
+        or name == 'boolean'
+        or name == 'string'
+        or name == 'table'
+        or name == 'number'
+        or name == 'integer'
+        or name == 'function'
+        or name == 'table'
+        or name == 'thread'
+        or name == 'userdata'
+        or name == 'lightuserdata' then
+            mode = 'def'
+        end
         local docs = status.interface.docType(name)
         for i = 1, #docs do
             local doc = docs[i]
diff --git a/test/references/init.lua b/test/references/init.lua
index 288606425..61a33ee4a 100644
--- a/test/references/init.lua
+++ b/test/references/init.lua
@@ -299,7 +299,7 @@ local <?x?>
 
 -- BUG
 TEST [[
----@return <?string?>
+---@return <?xxx?>
 function f() end
 ]]