diff --git a/src/knx_facade.cpp b/src/knx_facade.cpp
index 4a26740..2c3b97e 100644
--- a/src/knx_facade.cpp
+++ b/src/knx_facade.cpp
@@ -37,7 +37,7 @@
     #endif
 
     #ifdef __SAMD51__
-        // predefined global instance for TP or IP
+        // predefined global instance for TP or RF
         #if MASK_VERSION == 0x07B0
             KnxFacade<Samd51Platform, Bau07B0> knx(buttonEvent);
         #elif MASK_VERSION == 0x27B0
diff --git a/src/knx_facade.h b/src/knx_facade.h
index be0a14b..428b63d 100644
--- a/src/knx_facade.h
+++ b/src/knx_facade.h
@@ -474,7 +474,7 @@ template <class P, class B> class KnxFacade : private SaveRestore
 
 #ifndef KNX_NO_AUTOMATIC_GLOBAL_INSTANCE
     #ifdef __SAMD51__
-        // predefined global instance for TP or IP
+        // predefined global instance for TP or RF
         #if MASK_VERSION == 0x07B0
             extern KnxFacade<Samd51Platform, Bau07B0> knx;
         #elif MASK_VERSION == 0x27B0