diff --git a/sys/fmt/Kconfig b/sys/fmt/Kconfig
index 813bee254c..ab9429e4f8 100644
--- a/sys/fmt/Kconfig
+++ b/sys/fmt/Kconfig
@@ -7,6 +7,7 @@
 
 menuconfig MODULE_FMT
     bool "String formatting"
+    depends on TEST_KCONFIG
 
 config MODULE_FMT_TABLE
     bool "Table extension"