diff --git a/usrc/project_configs.h b/usrc/project_configs.h
index 2a7eb45..15eed77 100644
--- a/usrc/project_configs.h
+++ b/usrc/project_configs.h
@@ -1,10 +1,12 @@
 #pragma once
 
-#define PC_VERSION           (3 | 1 | 0 | 0)  // main/sub/fix
+#define VERSION(main, sub, fix) (main << 16 | sub << 8 | fix << 0)
+#define PC_VERSION              VERSION(3, 1, 0)
+
 #define PC_MANUFACTURER0     ('i' | 'f' << 8 | 'l' << 16 | 'y' << 24)
 #define PC_MANUFACTURER1     ('t' | 'o' << 8 | 'p' << 16 | '\0' << 24)
 #define PC_PROJECT_NAME      "xsync"
-#define PC_DEVICE_NAME      "xsync"
+#define PC_DEVICE_NAME       "xsync"
 #define PC_IFLYTOP_ENABLE_OS 1
 
 #define PC_DEBUG_UART             huart1