diff --git a/boards/modalai/voxl2-slpi/src/drivers/spektrum_rc/spektrum_rc.cpp b/boards/modalai/voxl2-slpi/src/drivers/spektrum_rc/spektrum_rc.cpp
index 18067b1756..3de4754c69 100644
--- a/boards/modalai/voxl2-slpi/src/drivers/spektrum_rc/spektrum_rc.cpp
+++ b/boards/modalai/voxl2-slpi/src/drivers/spektrum_rc/spektrum_rc.cpp
@@ -152,16 +152,11 @@ void task_main(int argc, char *argv[])
 		newbytes = read(uart_fd, &rx_buf[0], sizeof(rx_buf));
 #endif
 
-		uint8_t protocol_version = rx_buf[1] & 0x0F;
-
 		if (newbytes <= 0) {
 			if (print_msg) { PX4_INFO("Spektrum RC: Read no bytes from UART"); }
 
-		} else if (((newbytes != DSM_FRAME_SIZE) ||
-			    ((protocol_version != 0x02) && (protocol_version != 0x01))) &&
-			   (! first_correct_frame_received)) {
-			PX4_ERR("Spektrum RC: Invalid DSM frame. %d bytes. Protocol byte 0x%.2x",
-				newbytes, rx_buf[1]);
+		} else if ((newbytes != DSM_FRAME_SIZE) && (! first_correct_frame_received)) {
+			PX4_ERR("Invalid DSM frame size: %d bytes", newbytes);
 
 		} else {
 			if (print_msg) { PX4_INFO("Spektrum RC: Read %d bytes from UART", newbytes); }