diff --git a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f4xx.mk b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f4xx.mk
index 50964bb77..9d168c2d8 100644
--- a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f4xx.mk
+++ b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32f4xx.mk
@@ -1,4 +1,4 @@
-# List of the ChibiOS/RT Cortex-M0 STM32F4xx port files.
+# List of the ChibiOS/RT Cortex-M4 STM32F4xx 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 \
diff --git a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32l1xx.mk b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32l1xx.mk
index be53e1833..812c0d24c 100644
--- a/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32l1xx.mk
+++ b/os/rt/ports/ARMCMx/compilers/GCC/mk/port_stm32l1xx.mk
@@ -1,4 +1,4 @@
-# List of the ChibiOS/RT Cortex-M4 STM32L1xx port files.
+# List of the ChibiOS/RT Cortex-M3 STM32L1xx 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 \