diff --git a/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h b/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h
index 850793a0f..ad14e43b0 100644
--- a/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h
+++ b/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h
@@ -44,7 +44,7 @@
 /**
  * @brief   Number of bits in priority masks.
  */
-#define CORTEX_PRIORITY_BITS    4
+#define CORTEX_PRIORITY_BITS    2
 
 /**
  * @brief   Number of interrupt vectors.
diff --git a/os/hal/boards/ST_NUCLEO_L053R8/board.mk b/os/hal/boards/ST_NUCLEO_L053R8/board.mk
index 124a7d13f..6cb56c1de 100644
--- a/os/hal/boards/ST_NUCLEO_L053R8/board.mk
+++ b/os/hal/boards/ST_NUCLEO_L053R8/board.mk
@@ -1,5 +1,5 @@
 # List of all the board related files.
-BOARDSRC = ${CHIBIOS}/os/hal/boards/ST_NUCLEO_L152RE/board.c
+BOARDSRC = ${CHIBIOS}/os/hal/boards/ST_NUCLEO_L053R8/board.c
 
 # Required include directories
-BOARDINC = ${CHIBIOS}/os/hal/boards/ST_NUCLEO_L152RE
+BOARDINC = ${CHIBIOS}/os/hal/boards/ST_NUCLEO_L053R8
diff --git a/os/hal/ports/STM32/STM32L0xx/platform.mk b/os/hal/ports/STM32/STM32L0xx/platform.mk
index 0e24b00e9..2f99f0e01 100644
--- a/os/hal/ports/STM32/STM32L0xx/platform.mk
+++ b/os/hal/ports/STM32/STM32L0xx/platform.mk
@@ -3,10 +3,10 @@ ifeq ($(USE_SMART_BUILD),yes)
 HALCONF := $(strip $(shell cat halconf.h | egrep -e "define"))
 
 PLATFORMSRC := $(CHIBIOS)/os/hal/ports/common/ARMCMx/nvic.c \
-               $(CHIBIOS)/os/hal/ports/STM32/STM32L0xx/stm32_dma.c \
                $(CHIBIOS)/os/hal/ports/STM32/STM32L0xx/hal_lld.c \
                $(CHIBIOS)/os/hal/ports/STM32/LLD/TIMv1/st_lld.c
 ifneq ($(findstring HAL_USE_ADC TRUE,$(HALCONF)),)
+               $(CHIBIOS)/os/hal/ports/STM32/STM32L0xx/stm32_dma.c \
 PLATFORMSRC += $(CHIBIOS)/os/hal/ports/STM32/STM32L0xx/adc_lld.c
 endif
 ifneq ($(findstring HAL_USE_EXT TRUE,$(HALCONF)),)