diff --git a/RFM69.cpp b/RFM69.cpp
index 25a61df..4634dc9 100644
--- a/RFM69.cpp
+++ b/RFM69.cpp
@@ -1086,7 +1086,7 @@ void RFM69::listenModeInterruptHandler(void)
 
   // We've read the target, and will read the sender id and two time offset bytes for a total of 4 bytes
   DATALEN = PAYLOADLEN - 4;
-  SENDERID = spi->transfer(0);
+  SENDERID = _spi->transfer(0);
   burstRemaining.b[0] =  _spi->transfer(0);  // and get the time remaining
   burstRemaining.b[1] =  _spi->transfer(0);
   RF69_LISTEN_BURST_REMAINING_MS = burstRemaining.l;
@@ -1222,4 +1222,4 @@ void RFM69::listenModeSendBurst( uint8_t targetNode, const void* buffer, uint8_t
   setMode(RF69_MODE_STANDBY);
   reinitRadio();
 }
-#endif
\ No newline at end of file
+#endif