diff --git a/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/CMSIS/stm32l5xx.h b/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/CMSIS/stm32l5xx.h
index 5838b81a58..2b4e18c6e8 100644
--- a/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/CMSIS/stm32l5xx.h
+++ b/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/CMSIS/stm32l5xx.h
@@ -8,8 +8,8 @@
   *          is using in the C source code, usually in main.c. This file contains:
   *           - Configuration section that allows to select:
   *              - The STM32L5xx device used in the target application
-  *              - To use or not the peripheral’s drivers in application code(i.e.
-  *                code will be based on direct access to peripheral’s registers
+  *              - To use or not the peripheral's drivers in application code(i.e.
+  *                code will be based on direct access to peripheral's registers
   *                rather than drivers API), this option is controlled by
   *                "#define USE_HAL_DRIVER"
   *
diff --git a/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/STM32L5xx_HAL_Driver/stm32l5xx_hal_wwdg.c b/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/STM32L5xx_HAL_Driver/stm32l5xx_hal_wwdg.c
index b1e0ff33cd..4f72ee864a 100644
--- a/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/STM32L5xx_HAL_Driver/stm32l5xx_hal_wwdg.c
+++ b/targets/TARGET_STM/TARGET_STM32L5/STM32Cube_FW/STM32L5xx_HAL_Driver/stm32l5xx_hal_wwdg.c
@@ -33,7 +33,7 @@
         (++) max time (mS) = 1000 * (Counter - 0x40) / WWDG clock
     (+) Typical values:
         (++) Counter min (T[5;0] = 0x00) @110MHz (PCLK1) with zero prescaler:
-             max timeout before reset: ~37.23µs
+             max timeout before reset: ~37.23us
         (++) Counter max (T[5;0] = 0x3F) @110MHz (PCLK1) with prescaler dividing by 128:
              max timeout before reset: ~19.07ms