diff --git a/docs/sphinx/qapidoc.py b/docs/sphinx/qapidoc.py
index e03abcbb95..b7b86b5dff 100644
--- a/docs/sphinx/qapidoc.py
+++ b/docs/sphinx/qapidoc.py
@@ -464,7 +464,7 @@ class QAPISchemaGenDepVisitor(QAPISchemaVisitor):
         self._qapidir = qapidir
 
     def visit_module(self, name):
-        if name is not None:
+        if name != "./builtin":
             qapifile = self._qapidir + '/' + name
             self._env.note_dependency(os.path.abspath(qapifile))
         super().visit_module(name)