diff --git a/cores/esp32/MacAddress.cpp b/cores/esp32/MacAddress.cpp
index 991fdd5e178..e1a23f5822f 100644
--- a/cores/esp32/MacAddress.cpp
+++ b/cores/esp32/MacAddress.cpp
@@ -28,6 +28,10 @@ MacAddress::MacAddress(const char *macstr){
     fromString(macstr);
 }
 
+MacAddress::MacAddress(const String &macstr){
+    fromString(macstr.c_str());
+}
+
 MacAddress::MacAddress(uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4, uint8_t b5, uint8_t b6) {
     _type = MAC6;
     memset(_mac.bytes, 0, sizeof(_mac.bytes));
diff --git a/cores/esp32/MacAddress.h b/cores/esp32/MacAddress.h
index 83ce362a495..1463bc487c5 100644
--- a/cores/esp32/MacAddress.h
+++ b/cores/esp32/MacAddress.h
@@ -54,6 +54,7 @@ class MacAddress : public Printable {
     MacAddress(const uint8_t *macbytearray) : MacAddress(MAC6, macbytearray) {}
 
     MacAddress(const char *macstr);
+    MacAddress(const String &macstr);
 
     virtual ~MacAddress() {}