diff --git a/src/modules/Si443x/Si443x.cpp b/src/modules/Si443x/Si443x.cpp
index 5a55a98f..e1b253c5 100644
--- a/src/modules/Si443x/Si443x.cpp
+++ b/src/modules/Si443x/Si443x.cpp
@@ -184,11 +184,11 @@ int16_t Si443x::packetMode() {
 }
 
 void Si443x::setIrqAction(void (*func)(void)) {
-  attachInterrupt(digitalPinToInterrupt(_mod->getIrq()), func, FALLING);
+  attachInterrupt(RADIOLIB_DIGITAL_PIN_TO_INTERRUPT(_mod->getIrq()), func, FALLING);
 }
 
 void Si443x::clearIrqAction() {
-  detachInterrupt(digitalPinToInterrupt(_mod->getIrq()));
+  detachInterrupt(RADIOLIB_DIGITAL_PIN_TO_INTERRUPT(_mod->getIrq()));
 }
 
 int16_t Si443x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {