diff --git a/drivers/rng/Makefile b/drivers/rng/Makefile
index 2494717..78f6105 100644
--- a/drivers/rng/Makefile
+++ b/drivers/rng/Makefile
@@ -13,3 +13,4 @@
 obj-$(CONFIG_RNG_ROCKCHIP) += rockchip_rng.o
 obj-$(CONFIG_RNG_IPROC200) += iproc_rng200.o
 obj-$(CONFIG_RNG_SMCCC_TRNG) += smccc_trng.o
+obj-$(CONFIG_TPM_RNG) += tpm_rng.o