diff --git a/RNode_Firmware.ino b/RNode_Firmware.ino
index 05d9807..57a7f2f 100644
--- a/RNode_Firmware.ino
+++ b/RNode_Firmware.ino
@@ -609,7 +609,7 @@ void transmit(uint16_t size) {
 
         written++;
 
-        if (written == 255 && header & 0x0F) {
+        if (written == 255 && isSplitPacket(header)) {
           if (!LoRa->endPacket()) {
             kiss_indicate_error(ERROR_MODEM_TIMEOUT);
             kiss_indicate_error(ERROR_TXFAILED);