diff --git a/lib/Kconfig b/lib/Kconfig
index d241fe476fda..5c9c0687f76d 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -683,9 +683,6 @@ config PARMAN
 config OBJAGG
 	tristate "objagg" if COMPILE_TEST
 
-config STRING_SELFTEST
-	tristate "Test string functions"
-
 endmenu
 
 config GENERIC_IOREMAP
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 831212722924..5ddd575159fb 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2180,6 +2180,9 @@ config ASYNC_RAID6_TEST
 config TEST_HEXDUMP
 	tristate "Test functions located in the hexdump module at runtime"
 
+config STRING_SELFTEST
+	tristate "Test string functions at runtime"
+
 config TEST_STRING_HELPERS
 	tristate "Test functions located in the string_helpers module at runtime"