diff --git a/demos/ARMCM3-STM32F103-FATFS-GCC/mcuconf.h b/demos/ARMCM3-STM32F103-FATFS-GCC/mcuconf.h
index 13e210f5a..f7ce9ef55 100644
--- a/demos/ARMCM3-STM32F103-FATFS-GCC/mcuconf.h
+++ b/demos/ARMCM3-STM32F103-FATFS-GCC/mcuconf.h
@@ -35,7 +35,7 @@
  */
 
 /*
- * HAL driver settings.
+ * HAL driver system settings.
  */
 #define STM32_SYSCLK                72
 
diff --git a/demos/ARMCM3-STM32F103-GCC/mcuconf.h b/demos/ARMCM3-STM32F103-GCC/mcuconf.h
index 13e210f5a..f7ce9ef55 100644
--- a/demos/ARMCM3-STM32F103-GCC/mcuconf.h
+++ b/demos/ARMCM3-STM32F103-GCC/mcuconf.h
@@ -35,7 +35,7 @@
  */
 
 /*
- * HAL driver settings.
+ * HAL driver system settings.
  */
 #define STM32_SYSCLK                72