diff --git a/drivers/bus/mhi/core/Makefile b/drivers/bus/mhi/core/Makefile
index 12c57ab3724c..c3feb4130aa3 100644
--- a/drivers/bus/mhi/core/Makefile
+++ b/drivers/bus/mhi/core/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_MHI_BUS) := mhi.o
+obj-$(CONFIG_MHI_BUS) += mhi.o
 
 mhi-y := init.o main.o pm.o boot.o
 mhi-$(CONFIG_MHI_BUS_DEBUG) += debugfs.o