diff --git a/lib/posix/getopt/Kconfig b/lib/posix/getopt/Kconfig
index fc0055cf692..72c9961fb90 100644
--- a/lib/posix/getopt/Kconfig
+++ b/lib/posix/getopt/Kconfig
@@ -4,6 +4,7 @@
 
 menuconfig GETOPT
 	bool "Getopt library support"
+	default y if POSIX_API
 	help
 	  This option adds support of getopt.
 	  Different shell backends are use their own instance of getopt to