-#if IRMP_SUPPORT_DENON_PROTOCOL == 1 && IRMP_SUPPORT_RUWIDO_PROTOCOL == 1\r
-# warning DENON protocol conflicts wih RUWIDO, please enable only one of both protocols\r
+#if IRMP_SUPPORT_DENON_PROTOCOL == 1 && (IRMP_SUPPORT_RUWIDO_PROTOCOL == 1 || IRMP_SUPPORT_SIEMENS_PROTOCOL == 1)\r
+# warning DENON protocol conflicts wih RUWIDO/SIEMENS, please enable only one of both protocols\r
+# warning RUWIDO protocol disabled\r
+# warning SIEMENS protocol disabled\r
+# warning DENON protocol stays enabled\r
+# undef IRMP_SUPPORT_RUWIDO_PROTOCOL\r
+# define IRMP_SUPPORT_RUWIDO_PROTOCOL 0\r
+# undef IRMP_SUPPORT_SIEMENS_PROTOCOL\r
+# define IRMP_SUPPORT_SIEMENS_PROTOCOL 0\r
+#endif\r
+\r
+#if IRMP_SUPPORT_DENON_PROTOCOL == 1 && (IRMP_SUPPORT_RUWIDO_PROTOCOL == 1 || IRMP_SUPPORT_SIEMENS_PROTOCOL == 1)\r
+# warning MERLIN protocol conflicts wih RUWIDO/SIEMENS, please enable only one of both protocols\r