diff --git a/lib/Makefile b/lib/Makefile
index 44a4675..8535f4d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -44,6 +44,8 @@
 obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
 obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
 
+obj-$(CONFIG_SWIOTLB) += swiotlb.o
+
 hostprogs-y	:= gen_crc32table
 clean-files	:= crc32table.h