diff --git a/os/hal/ports/STM32/LLD/EXTIv1/driver.mk b/os/hal/ports/STM32/LLD/EXTIv1/driver.mk
index f961cac6c..53ebf6246 100644
--- a/os/hal/ports/STM32/LLD/EXTIv1/driver.mk
+++ b/os/hal/ports/STM32/LLD/EXTIv1/driver.mk
@@ -1,9 +1,9 @@
 ifeq ($(USE_SMART_BUILD),yes)
 ifneq ($(findstring HAL_USE_EXT TRUE,$(HALCONF)),)
-PLATFORMSRC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTv1/hal_ext_lld.c
+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTIv1/hal_ext_lld.c
 endif
 else
-PLATFORMSRC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTv1/hal_ext_lld.c
+PLATFORMSRC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTIv1/hal_ext_lld.c
 endif
 
-PLATFORMINC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTv1
+PLATFORMINC += $(CHIBIOS)/os/hal/ports/STM32/LLD/EXTIv1