diff --git a/main.c b/main.c
index ced52f31..520ab75b 100644
--- a/main.c
+++ b/main.c
@@ -2296,7 +2296,7 @@ void get_tlm_fc() {
 	/* write telemetry into data buffer */
 
 	memset(source_bytes, 0x00, sizeof(source_bytes));
-	source_byte[10] = (uint8_t) rnd_float(0,255);
+	source_bytes[10] = (uint8_t) rnd_float(0,255);
 
 	/* convert data buffer into stream buffer */