diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
index 16b2669612..e93c2dd36a 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
@@ -67,6 +67,5 @@
 #define SIO_EC_MEMMAP_ENABLE	/* EC Memory Map Resources */
 #define SIO_EC_HOST_ENABLE	/* EC Host Interface Resources */
 #define SIO_EC_ENABLE_PS2K	/* Enable PS/2 Keyboard */
-#define SIO_EC_ENABLE_COM1	/* Enable Serial Port 1 */
 
 #endif