diff --git a/package/python-txdbus/Config.in b/package/python-txdbus/Config.in
index f38bbf93f0..df77a1f573 100644
--- a/package/python-txdbus/Config.in
+++ b/package/python-txdbus/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_PYTHON_TXDBUS
 	bool "python-txdbus"
+	depends on BR2_PACKAGE_PYTHON3 # python-twisted
 	select BR2_PACKAGE_PYTHON_TWISTED # runtime
 	select BR2_PACKAGE_PYTHON_SIX # runtime
 	help