diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index eaa9fc24f..31d8277ac 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -613,7 +613,7 @@
 
 #define MMU_REQUIRED_FW_BUILDNR 83
 #define MMU_HWRESET
-//#define MMU_DEBUG //print communication between MMU2 and printer on serial
+#define MMU_DEBUG //print communication between MMU2 and printer on serial
 
 #define MMU_IDLER_SENSOR_ATTEMPTS_NR 21 //max. number of attempts to load filament if first load failed; value for max bowden length and case when loading fails right at the beginning