diff --git a/combo/src/main/aidl/org/monkey/d/ruffy/ruffy/driver/IRuffyService.aidl b/combo/src/main/aidl/org/monkey/d/ruffy/ruffy/driver/IRuffyService.aidl
index 6c988aa038..8861938f8a 100644
--- a/combo/src/main/aidl/org/monkey/d/ruffy/ruffy/driver/IRuffyService.aidl
+++ b/combo/src/main/aidl/org/monkey/d/ruffy/ruffy/driver/IRuffyService.aidl
@@ -20,4 +20,5 @@ interface IRuffyService {
     void rtSendKey(byte keyCode, boolean changed);
     void resetPairing();
     boolean isConnected();
+    String getMacAddress();
 }
diff --git a/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyCommands.java b/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyCommands.java
index 0567e1cb12..1b9b5414ec 100644
--- a/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyCommands.java
+++ b/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyCommands.java
@@ -1,5 +1,6 @@
 package info.nightscout.androidaps.plugins.pump.combo.ruffyscripter;
 
+import androidx.annotation.Nullable;
 import info.nightscout.androidaps.plugins.pump.combo.ruffyscripter.history.PumpHistoryRequest;
 
 public interface RuffyCommands {
@@ -45,5 +46,8 @@ public interface RuffyCommands {
     CommandResult getDateAndTime();
 
     CommandResult setDateAndTime();
+
+    @Nullable
+    String getMacAddress();
 }
 
diff --git a/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyScripter.java b/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyScripter.java
index c60fca36a9..a8d9ab025b 100644
--- a/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyScripter.java
+++ b/combo/src/main/java/info/nightscout/androidaps/plugins/pump/combo/ruffyscripter/RuffyScripter.java
@@ -822,6 +822,16 @@ public class RuffyScripter implements RuffyCommands {
         throw new RuntimeException("Not supported");
     }
 
+    @Nullable
+    public String getMacAddress() {
+        try {
+            return ruffyService.getMacAddress();
+        } catch (RemoteException e) {
+            // ignore; ruffy version is probably old and doesn't support reading MAC address yet
+            return null;
+        }
+    }
+
     /**
      * Confirms and dismisses the given alert if it's raised before the timeout
      */