diff --git a/crypto/Kconfig b/crypto/Kconfig
index d0287ce56daf..898acc5c1967 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -74,6 +74,7 @@ config CRYPTO_XCBC
 config CRYPTO_NULL
 	tristate "Null algorithms"
 	select CRYPTO_ALGAPI
+	select CRYPTO_BLKCIPHER
 	help
 	  These are 'Null' algorithms, used by IPsec, which do nothing.