diff --git a/lib/stm32f1/i2c.c b/lib/stm32_common/i2c.c
similarity index 100%
rename from lib/stm32f1/i2c.c
rename to lib/stm32_common/i2c.c
diff --git a/lib/stm32f2/Makefile b/lib/stm32f2/Makefile
index d52525b4..f3d6ff79 100644
--- a/lib/stm32f2/Makefile
+++ b/lib/stm32f2/Makefile
@@ -28,7 +28,7 @@ CFLAGS		= -Os -g -Wall -Wextra -I../../include -fno-common \
 		  -ffunction-sections -fdata-sections -MD -DSTM32F2
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
-OBJS		= vector.o gpio.o systick.o
+OBJS		= vector.o gpio.o systick.o i2c.o
 
 #VPATH += ../usb
 VPATH += ../stm32_common