diff --git a/lib/stm32/l0/Makefile b/lib/stm32/l0/Makefile
index 97a274dc..0129a3f4 100644
--- a/lib/stm32/l0/Makefile
+++ b/lib/stm32/l0/Makefile
@@ -42,6 +42,7 @@ OBJS		+= timer_common_all.o
 OBJS            += gpio_common_all.o gpio_common_f0234.o rcc_common_all.o
 OBJS		+= adc_common_v2.o
 OBJS		+= crs_common_all.o
+OBJS		+= exti_common_all.o
 
 OBJS            += usb.o usb_control.o usb_standard.o
 OBJS            += st_usbfs_core.o st_usbfs_v2.o