diff --git a/meta-encrypted-storage/recipes-kernel/linux/linux-yocto/dmcrypt.cfg b/meta-encrypted-storage/recipes-kernel/linux/linux-yocto/dmcrypt.cfg
index cedfcea..18a5b16 100644
--- a/meta-encrypted-storage/recipes-kernel/linux/linux-yocto/dmcrypt.cfg
+++ b/meta-encrypted-storage/recipes-kernel/linux/linux-yocto/dmcrypt.cfg
@@ -8,4 +8,4 @@ CONFIG_CRYPTO_XTS=y
 
 # Use entropy-strong source for RNG
 CONFIG_HW_RANDOM=y
-CONFIG_HW_RANDOM_TPM=m
+CONFIG_HW_RANDOM_TPM=y