diff --git a/libraries/sdk/Peripheral/ch32v30x.h b/libraries/sdk/Peripheral/ch32v30x.h
index 229e947..91cc573 100644
--- a/libraries/sdk/Peripheral/ch32v30x.h
+++ b/libraries/sdk/Peripheral/ch32v30x.h
@@ -22,7 +22,7 @@
 #define __MPU_PRESENT             0 /* Other CH32 devices does not provide an MPU */
 #define __Vendor_SysTickConfig    0 /* Set to 1 if different SysTick Config is used */	 
 	 
-#define HSE_VALUE    ((uint32_t)8000000) /* Value of the External oscillator in Hz */
+#define HSE_VALUE    ((uint32_t)16000000) /* Value of the External oscillator in Hz */
 
 /* In the following line adjust the External High Speed oscillator (HSE) Startup Timeout value */
 #define HSE_STARTUP_TIMEOUT   ((uint16_t)0x1000) /* Time out for HSE start up */