diff --git a/grbl/config.h b/grbl/config.h
index 866a512..30ac9e6 100644
--- a/grbl/config.h
+++ b/grbl/config.h
@@ -32,10 +32,10 @@
 
 
 // Define board type for pin map and default settings.
-#define CPU_MAP_SMOOTHIEBOARD   // Smoothieboard (NXP LPC1769 MCU)
+//#define CPU_MAP_SMOOTHIEBOARD   // Smoothieboard (NXP LPC1769 MCU)
 //#define CPU_MAP_C3D_REMIX       // Cohesion3D Remix (NXP LPC1769 MCU)
 //#define CPU_MAP_C3D_MINI        // Cohesion3D Mini (NXP LPC1769 MCU)
-//#define CPU_MAP_MKS_SBASE       // MKS SBASE Board (NXP LPC1768 MCU)
+#define CPU_MAP_MKS_SBASE       // MKS SBASE Board (NXP LPC1768 MCU)
 //#define CPU_MAP_AZTEEG_X5       // Azteeg X5 Board (NXP LPC1769 MCU)
 
 // Force other Spindle PWM Pin (default is P2.5)