1 files changed, 8 insertions, 8 deletions
diff --git a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f37x.mk b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f37x.mk
index 4b38231bb..2b945fdf7 100644
--- a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f37x.mk
+++ b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f37x.mk
@@ -1,15 +1,15 @@
 # List of the ChibiOS/RT Cortex-M4 STM32F37x port files.
 PORTSRC = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/crt0.c \
           $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/vectors.c \
-          ${CHIBIOS}/os/rt/ports/ARMCMx/chcore.c \
-          ${CHIBIOS}/os/rt/ports/ARMCMx/chcore_v7m.c
+          $(CHIBIOS)/os/rt/ports/ARMCMx/chcore.c \
+          $(CHIBIOS)/os/rt/ports/ARMCMx/chcore_v7m.c
           
 PORTASM = $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC/chcoreasm_v7m.s
 
-PORTINC = ${CHIBIOS}/os/ext/CMSIS/include \
-          ${CHIBIOS}/os/ext/CMSIS/ST \
-          ${CHIBIOS}/os/common/ports/ARMCMx/devices/STM32F37x \
-          ${CHIBIOS}/os/rt/ports/ARMCMx \
-          ${CHIBIOS}/os/rt/ports/ARMCMx/compilers/GCC
+PORTINC = $(CHIBIOS)/os/ext/CMSIS/include \
+          $(CHIBIOS)/os/ext/CMSIS/ST \
+          $(CHIBIOS)/os/common/ports/ARMCMx/devices/STM32F37x \
+          $(CHIBIOS)/os/rt/ports/ARMCMx \
+          $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC
 
-PORTLD  = ${CHIBIOS}/os/common/ports/ARMCMx/compilers/GCC/ld
+PORTLD  = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/ld