diff --git a/sys/Kconfig b/sys/Kconfig
index 24a1eed3f3..5ba986814d 100644
--- a/sys/Kconfig
+++ b/sys/Kconfig
@@ -16,6 +16,7 @@ rsource "embunit/Kconfig"
 rsource "entropy_source/Kconfig"
 rsource "event/Kconfig"
 rsource "fmt/Kconfig"
+rsource "frac/Kconfig"
 rsource "isrpipe/Kconfig"
 rsource "malloc_thread_safe/Kconfig"
 rsource "net/Kconfig"
diff --git a/sys/frac/Kconfig b/sys/frac/Kconfig
new file mode 100644
index 0000000000..8b66459019
--- /dev/null
+++ b/sys/frac/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_FRAC
+    bool "Fractional integer operations"
+    depends on TEST_KCONFIG