diff --git a/README.md b/README.md
index bf6018b..ca4ed30 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ Meanwhile in the **receiver** program...
 #include "freertos/task.h"
 #include "lora.h"
 
-uint8_t but[32];
+uint8_t buf[32];
 
 void task_rx(void *p)
 {