diff --git a/EXRAILAsserts.h b/EXRAILAsserts.h
index cd01ad8..fb40cb1 100644
--- a/EXRAILAsserts.h
+++ b/EXRAILAsserts.h
@@ -145,9 +145,9 @@ constexpr bool unsafePin(const int16_t value, const uint16_t pos=0 ) {
 // check dangerous pins
 #define _PIN_RESERVED_ "\n\nUSER ERROR: Pin is used by Motor Shield or other critical function.\n"
 #undef SET
-#define SET(vpin) static_assert(!unsafePin(vpin),"SET(" #vpin ")" _PIN_RESERVED_);
+#define SET(vpin, ...) static_assert(!unsafePin(vpin),"SET(" #vpin ")" _PIN_RESERVED_);
 #undef RESET
-#define RESET(vpin) static_assert(!unsafePin(vpin),"RESET(" #vpin ")" _PIN_RESERVED_);
+#define RESET(vpin,...) static_assert(!unsafePin(vpin),"RESET(" #vpin ")" _PIN_RESERVED_);
 #undef BLINK
 #define BLINK(vpin,onDuty,offDuty) static_assert(!unsafePin(vpin),"BLINK(" #vpin ")" _PIN_RESERVED_);
 #undef SIGNAL
diff --git a/version.h b/version.h
index 615f906..8b0ad57 100644
--- a/version.h
+++ b/version.h
@@ -3,7 +3,8 @@
 
 #include "StringFormatter.h"
 
-#define VERSION "5.5.19"
+#define VERSION "5.5.20"
+// 5.5.20 - EXRAIL SET/RESET assert fix  
 // 5.5.19 - Railcom change to use RailcomCollector device  
 // 5.5.18 - New STASH internals 
 //        - EXRAIL IFSTASH/CLEAR_ANY_STASH