diff --git a/keyboards/moonlander/config.h b/keyboards/moonlander/config.h
index 44f19027d3..dbe2099a5b 100644
--- a/keyboards/moonlander/config.h
+++ b/keyboards/moonlander/config.h
@@ -34,7 +34,14 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Planck PCB default pin-out */
 #define MATRIX_ROW_PINS { B10, B11, B12, B13, B14, B15 }
 #define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5, A6 }
-#define UNUSED_PINS
+
+#define MCP23_ROW_PINS { GPB5, GBP4, GBP3, GBP2, GBP1, GBP0 }
+#define MCP23_COL_PINS { GPA0, GBA1, GBA2, GBA3, GBA4, GBA5, GBA6 }
+
+#define MCP23_LED_R GPB7
+#define MCP23_LED_G GPB6
+#define MCP23_LED_B GPA7
+
 
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION ROW2COL