diff --git a/lib/stm32/l4/Makefile b/lib/stm32/l4/Makefile
index aed2217e..0726cd75 100644
--- a/lib/stm32/l4/Makefile
+++ b/lib/stm32/l4/Makefile
@@ -42,7 +42,7 @@ OBJS		=
 # common/shared objs
 OBJS            += rcc_common_all.o
 OBJS            += gpio_common_all.o gpio_common_f0234.o
-OBJS            += adc_common_v2.o
+OBJS            += adc_common_v2.o adc_common_v2_multi.o
 
 VPATH += ../../usb:../:../../cm3:../common
 VPATH += ../../ethernet