diff --git a/sys/cb_mux/Kconfig b/sys/cb_mux/Kconfig
new file mode 100644
index 0000000000..239c7c5fc6
--- /dev/null
+++ b/sys/cb_mux/Kconfig
@@ -0,0 +1,10 @@
+# Copyright (c) 2021 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config MODULE_CB_MUX
+    bool "Callback Multiplexer"
+    depends on TEST_KCONFIG