diff --git a/drivers/iommu/arm/Makefile b/drivers/iommu/arm/Makefile
index 35a7e13eef34..0f9efeab709f 100644
--- a/drivers/iommu/arm/Makefile
+++ b/drivers/iommu/arm/Makefile
@@ -1,3 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-y += arm-smmu/
-obj-$(CONFIG_ARM_SMMU_V3) += arm-smmu-v3/
+obj-y += arm-smmu/ arm-smmu-v3/
diff --git a/drivers/iommu/arm/arm-smmu-v3/Makefile b/drivers/iommu/arm/arm-smmu-v3/Makefile
index 6cc7c8557b9e..493a659cc66b 100644
--- a/drivers/iommu/arm/arm-smmu-v3/Makefile
+++ b/drivers/iommu/arm/arm-smmu-v3/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-y += arm_smmu_v3.o
+obj-$(CONFIG_ARM_SMMU_V3) += arm_smmu_v3.o
 arm_smmu_v3-y := arm-smmu-v3.o
 arm_smmu_v3-$(CONFIG_ARM_SMMU_V3_IOMMUFD) += arm-smmu-v3-iommufd.o
 arm_smmu_v3-$(CONFIG_ARM_SMMU_V3_SVA) += arm-smmu-v3-sva.o