diff --git a/Marlin/src/pins/ramps/pins_RAMPS.h b/Marlin/src/pins/ramps/pins_RAMPS.h
index b0074dc785..0e6e33e18e 100644
--- a/Marlin/src/pins/ramps/pins_RAMPS.h
+++ b/Marlin/src/pins/ramps/pins_RAMPS.h
@@ -335,10 +335,10 @@
     #endif
   #else
     #ifndef TMC_SPI_MOSI
-      #define TMC_SPI_MOSI                 AUX3_03
+      #define TMC_SPI_MOSI                 AUX3_04
     #endif
     #ifndef TMC_SPI_MISO
-      #define TMC_SPI_MISO                 AUX3_04
+      #define TMC_SPI_MISO                 AUX3_03
     #endif
     #ifndef TMC_SPI_SCK
       #define TMC_SPI_SCK                  AUX3_05