diff --git a/sys/Kconfig b/sys/Kconfig
index b54a6c53b8..f6d5e3979c 100644
--- a/sys/Kconfig
+++ b/sys/Kconfig
@@ -19,6 +19,7 @@ rsource "checksum/Kconfig"
 rsource "color/Kconfig"
 rsource "crypto/Kconfig"
 rsource "congure/Kconfig"
+rsource "cxx_ctor_guards/Kconfig"
 rsource "div/Kconfig"
 rsource "embunit/Kconfig"
 rsource "entropy_source/Kconfig"
diff --git a/sys/cxx_ctor_guards/Kconfig b/sys/cxx_ctor_guards/Kconfig
new file mode 100644
index 0000000000..99b359858b
--- /dev/null
+++ b/sys/cxx_ctor_guards/Kconfig
@@ -0,0 +1,13 @@
+# 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_CXX_CTOR_GUARDS
+    bool "C++ constructor guards for static instances"
+    depends on TEST_KCONFIG
+    help
+        C++ constructor guards for thread-safe initialization of static instances.
+        Warning! this module is likely only compatible with g++.