diff --git a/src/BuildOpt.h b/src/BuildOpt.h
index 3ac38c85..4e789f5c 100644
--- a/src/BuildOpt.h
+++ b/src/BuildOpt.h
@@ -118,7 +118,7 @@
   // Arduino build
   #include "Arduino.h"
   #define RADIOLIB_BUILD_ARDUINO
-#else 
+#else
   // generic build
   #include <stdio.h>
   #ifndef RADIOLIB_BUILD_GENERIC