diff --git a/Core/Inc/yunhorn_sts_prd_conf.h b/Core/Inc/yunhorn_sts_prd_conf.h
index 196bc74..82f55ae 100644
--- a/Core/Inc/yunhorn_sts_prd_conf.h
+++ b/Core/Inc/yunhorn_sts_prd_conf.h
@@ -32,8 +32,8 @@
 /* 
  * MCU CORE SELECTION
  */
-//#define  			USE_STM32WLE5					1U						//STM32WLE5CCUX
-#define  			USE_STM32WL55					1U							//STM32WL55JC1X
+#define  			USE_STM32WLE5					1U						//STM32WLE5CCUX
+//#define  			USE_STM32WL55					1U							//STM32WL55JC1X
 
 /*
  *	MODULE SELECTION