diff --git a/bsp/at32/libraries/f403a_407/rt_drivers/drv_soft_i2c.c b/bsp/at32/libraries/f403a_407/rt_drivers/drv_soft_i2c.c
index 753d961fe0..b08adcd56a 100644
--- a/bsp/at32/libraries/f403a_407/rt_drivers/drv_soft_i2c.c
+++ b/bsp/at32/libraries/f403a_407/rt_drivers/drv_soft_i2c.c
@@ -19,7 +19,7 @@
 #if !defined(BSP_USING_I2C1) && !defined(BSP_USING_I2C2) && \
     !defined(BSP_USING_I2C3)
 #error "Please define at least one BSP_USING_I2Cx"
-/* this driver can be disabled at menuconfig �RT-Thread Components �Device Drivers */
+/* this driver can be disabled at menuconfig RT-Thread Components Device Drivers */
 #endif
 
 static const struct at32_soft_i2c_config soft_i2c_config[] =
diff --git a/bsp/at32/libraries/f435_437/rt_drivers/drv_soft_i2c.c b/bsp/at32/libraries/f435_437/rt_drivers/drv_soft_i2c.c
index 753d961fe0..b08adcd56a 100644
--- a/bsp/at32/libraries/f435_437/rt_drivers/drv_soft_i2c.c
+++ b/bsp/at32/libraries/f435_437/rt_drivers/drv_soft_i2c.c
@@ -19,7 +19,7 @@
 #if !defined(BSP_USING_I2C1) && !defined(BSP_USING_I2C2) && \
     !defined(BSP_USING_I2C3)
 #error "Please define at least one BSP_USING_I2Cx"
-/* this driver can be disabled at menuconfig �RT-Thread Components �Device Drivers */
+/* this driver can be disabled at menuconfig RT-Thread Components Device Drivers */
 #endif
 
 static const struct at32_soft_i2c_config soft_i2c_config[] =