diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index 652a23af..3f12358f 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -18,6 +18,7 @@
 
 // Electronics
 #define MOTHERBOARD BOARD_EINSY_1_0a
+#define STEEL_SHEET
 #define HAS_SECOND_SERIAL_PORT