diff --git a/sys/base64/Kconfig b/sys/base64/Kconfig
new file mode 100644
index 0000000000..c723e3ea50
--- /dev/null
+++ b/sys/base64/Kconfig
@@ -0,0 +1,15 @@
+# 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_BASE64
+    bool "Base64 codec"
+    depends on TEST_KCONFIG
+
+config MODULE_BASE64URL
+    bool "Base64 URL codec"
+    depends on TEST_KCONFIG
+    select MODULE_BASE64