Fix SERIAL_PORT_2 sanity check

6 years ago · e2ab78d876
1 changed files with 1 additions and 1 deletions
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@ -365,7 +365,7 @@
  #error "Set SERIAL_PORT to the port on your board. Usually this is 0."
 #endif

-#if SERIAL_PORT_2 && NUM_SERIAL < 2
+#if defined(SERIAL_PORT_2) && NUM_SERIAL < 2
  #error "SERIAL_PORT_2 is not supported for your MOTHERBOARD. Disable it to continue."
 #endif