diff --git a/lib/lm4f/Makefile b/lib/lm4f/Makefile
index 6a5d6cf7..2cb3853a 100644
--- a/lib/lm4f/Makefile
+++ b/lib/lm4f/Makefile
@@ -39,6 +39,7 @@ TGT_CFLAGS	+= $(STANDARD_FLAGS)
 ARFLAGS		= rcs
 OBJS		= gpio.o vector.o assert.o systemcontrol.o rcc.o uart.o \
 		  usb_lm4f.o usb.o usb_control.o usb_standard.o
+OBJS		+= usb_msc.o
 
 VPATH += ../usb:../cm3
 
diff --git a/lib/stm32/f0/Makefile b/lib/stm32/f0/Makefile
index ca93a220..b176f428 100644
--- a/lib/stm32/f0/Makefile
+++ b/lib/stm32/f0/Makefile
@@ -51,7 +51,7 @@ OBJS		+= usart_common_all.o usart_common_v2.o
 OBJS		+= i2c_common_v2.o
 OBJS		+= spi_common_all.o spi_common_v2.o
 
-OBJS		+= usb.o usb_control.o usb_standard.o
+OBJS		+= usb.o usb_control.o usb_standard.o usb_msc.o
 OBJS		+= st_usbfs_core.o st_usbfs_v2.o
 
 VPATH += ../../usb:../:../../cm3:../common
diff --git a/lib/stm32/f3/Makefile b/lib/stm32/f3/Makefile
index 35e3e180..1df08061 100644
--- a/lib/stm32/f3/Makefile
+++ b/lib/stm32/f3/Makefile
@@ -49,7 +49,7 @@ OBJS		+= usart_common_v2.o usart_common_all.o
 OBJS		+= i2c_common_v2.o
 OBJS		+= spi_common_all.o spi_common_v2.o
 
-OBJS		+= usb.o usb_control.o usb_standard.o
+OBJS		+= usb.o usb_control.o usb_standard.o usb_msc.o
 OBJS		+= st_usbfs_core.o st_usbfs_v1.o
 
 VPATH += ../../usb:../:../../cm3:../common
diff --git a/lib/stm32/l0/Makefile b/lib/stm32/l0/Makefile
index 2da5fd3a..acb15b51 100644
--- a/lib/stm32/l0/Makefile
+++ b/lib/stm32/l0/Makefile
@@ -52,7 +52,7 @@ OBJS		+= rng_common_v1.o
 OBJS		+= usart_common_all.o usart_common_v2.o
 OBJS		+= iwdg_common_all.o
 
-OBJS            += usb.o usb_control.o usb_standard.o
+OBJS            += usb.o usb_control.o usb_standard.o usb_msc.o
 OBJS            += st_usbfs_core.o st_usbfs_v2.o
 
 VPATH += ../../usb:../:../../cm3:../common
diff --git a/lib/stm32/l1/Makefile b/lib/stm32/l1/Makefile
index 7b0dc489..8ff1c0c7 100644
--- a/lib/stm32/l1/Makefile
+++ b/lib/stm32/l1/Makefile
@@ -49,7 +49,7 @@ OBJS		+= exti_common_all.o
 OBJS		+= rcc_common_all.o
 OBJS		+= adc.o adc_common_v1.o
 
-OBJS		+= usb.o usb_control.o usb_standard.o
+OBJS		+= usb.o usb_control.o usb_standard.o usb_msc.o
 OBJS		+= st_usbfs_core.o st_usbfs_v1.o
 
 VPATH += ../../usb:../:../../cm3:../common
diff --git a/lib/stm32/l4/Makefile b/lib/stm32/l4/Makefile
index 58816c76..53c49611 100644
--- a/lib/stm32/l4/Makefile
+++ b/lib/stm32/l4/Makefile
@@ -56,7 +56,7 @@ OBJS            += iwdg_common_all.o
 OBJS            += rtc_common_l1f024.o
 OBJS            += spi_common_all.o spi_common_v2.o
 
-OBJS            += usb.o usb_control.o usb_standard.o
+OBJS            += usb.o usb_control.o usb_standard.o usb_msc.o
 OBJS            += st_usbfs_core.o st_usbfs_v2.o
 
 VPATH += ../../usb:../:../../cm3:../common