diff --git a/lib/Makefile b/lib/Makefile
index 543f2502..a18062e4 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -65,6 +65,7 @@
 obj-$(CONFIG_AUDIT_GENERIC) += audit.o
 
 obj-$(CONFIG_SWIOTLB) += swiotlb.o
+obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
 obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
 
 lib-$(CONFIG_GENERIC_BUG) += bug.o