diff --git a/src/mesh/RadioLibInterface.cpp b/src/mesh/RadioLibInterface.cpp
index afec06ba0..a7cadf2ad 100644
--- a/src/mesh/RadioLibInterface.cpp
+++ b/src/mesh/RadioLibInterface.cpp
@@ -11,6 +11,17 @@
 // FIXME, we default to 4MHz SPI, SPI mode 0, check if the datasheet says it can really do that
 static SPISettings spiSettings(4000000, MSBFIRST, SPI_MODE0);
 
+#ifdef PORTDUINO
+
+void LockingModule::SPItransfer(uint8_t cmd, uint8_t reg, uint8_t *dataOut, uint8_t *dataIn, uint8_t numBytes)
+{
+    concurrency::LockGuard g(spiLock);
+
+    Module::SPItransfer(cmd, reg, dataOut, dataIn, numBytes);
+}
+
+#else
+
 void LockingModule::SPIbeginTransaction()
 {
     spiLock->lock();
@@ -25,6 +36,8 @@ void LockingModule::SPIendTransaction()
     Module::SPIendTransaction();
 }
 
+#endif
+
 RadioLibInterface::RadioLibInterface(RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst, RADIOLIB_PIN_TYPE busy,
                                      SPIClass &spi, PhysicalLayer *_iface)
     : NotifiedWorkerThread("RadioIf"), module(cs, irq, rst, busy, spi, spiSettings), iface(_iface)
diff --git a/src/mesh/RadioLibInterface.h b/src/mesh/RadioLibInterface.h
index f940f8908..08aa84811 100644
--- a/src/mesh/RadioLibInterface.h
+++ b/src/mesh/RadioLibInterface.h
@@ -40,9 +40,13 @@ class LockingModule : public Module
         : Module(cs, irq, rst, gpio, spi, spiSettings)
     {
     }
-
+    
+#ifdef PORTDUINO
+    void SPItransfer(uint8_t cmd, uint8_t reg, uint8_t *dataOut, uint8_t *dataIn, uint8_t numBytes) override;
+#else
     void SPIbeginTransaction() override;
     void SPIendTransaction() override;
+#endif
 };
 
 class RadioLibInterface : public RadioInterface, protected concurrency::NotifiedWorkerThread
diff --git a/version.properties b/version.properties
index dd4911456..6aa1edff3 100644
--- a/version.properties
+++ b/version.properties
@@ -1,4 +1,4 @@
 [VERSION]  
 major = 1
 minor = 3
-build = 17
+build = 19