diff --git a/src/BuildOpt.h b/src/BuildOpt.h
index 2112e21a..063a8e05 100644
--- a/src/BuildOpt.h
+++ b/src/BuildOpt.h
@@ -116,7 +116,7 @@
 
 #else
   // other platforms not covered by the above list - this may or may not work
-  #warning "RadioLib might not be compatible with this Arduino board - check supported platforms at https://github.com/jgromes/RadioLib!"
+  #define RADIOLIB_UNKNOWN_PLATFORM
   #define RADIOLIB_PIN_TYPE                           uint8_t
   #define RADIOLIB_PIN_MODE                           uint8_t
   #define RADIOLIB_PIN_STATUS                         uint8_t
diff --git a/src/RadioLib.h b/src/RadioLib.h
index eea7044d..ae4a6909 100644
--- a/src/RadioLib.h
+++ b/src/RadioLib.h
@@ -41,10 +41,18 @@
 #include "TypeDef.h"
 #include "Module.h"
 
+// warnings are printed in this file since BuildOpt.h is compiled in multiple places
+
+// check God mode
 #ifdef RADIOLIB_GODMODE
   #warning "God mode active, I hope it was intentional. Buckle up, lads."
 #endif
 
+// check unknown/unsupported platform
+#ifdef RADIOLIB_UNKNOWN_PLATFORM
+  #warning "RadioLib might not be compatible with this Arduino board - check supported platforms at https://github.com/jgromes/RadioLib!"
+#endif
+
 #include "modules/CC1101/CC1101.h"
 #include "modules/ESP8266/ESP8266.h"
 #include "modules/HC05/HC05.h"