diff --git a/src/ISerial.cpp b/src/ISerial.cpp
index dbfa6a30..650cfb06 100644
--- a/src/ISerial.cpp
+++ b/src/ISerial.cpp
@@ -33,25 +33,6 @@ void ISerial::flush() {
   _mod->ModuleSerial->flush();
 }
 
-// SoftwareSerial-only methods
-#if !defined(RADIOLIB_SOFTWARE_SERIAL_UNSUPPORTED)
-bool ISerial::listen() {
-  return(_mod->ModuleSerial->listen());
-}
-
-bool ISerial::isListening() {
-  return(_mod->ModuleSerial->isListening());
-}
-
-bool ISerial::stopListening() {
-  return(_mod->ModuleSerial->stopListening());
-}
-
-bool ISerial::overflow() {
-  return(_mod->ModuleSerial->overflow());
-}
-#endif
-
 size_t ISerial::print(const __FlashStringHelper *ifsh) {
   return(_mod->ModuleSerial->print(ifsh));
 }
diff --git a/src/ISerial.h b/src/ISerial.h
index 34064934..0029234e 100644
--- a/src/ISerial.h
+++ b/src/ISerial.h
@@ -25,14 +25,6 @@ class ISerial {
     int available();
     void flush();
 
-    // SoftwareSerial-only methods
-    #if !defined(RADIOLIB_SOFTWARE_SERIAL_UNSUPPORTED)
-    bool listen();
-    bool isListening();
-    bool stopListening();
-    bool overflow();
-    #endif
-
     size_t print(const __FlashStringHelper *);
     size_t print(const String &);
     size_t print(const char[]);