diff --git a/Firmware/mmu.cpp b/Firmware/mmu.cpp
index 54ccbb13a..449efabd0 100644
--- a/Firmware/mmu.cpp
+++ b/Firmware/mmu.cpp
@@ -181,6 +181,17 @@ bool check_for_ir_sensor()
 #endif //IR_SENSOR
 }
 
+static bool activate_stealth_mode()
+{
+#if defined (MMU_FORCE_STEALTH_MODE)
+	return true;
+#elif defined (SILENT_MODE_STEALTH)
+	return (eeprom_read_byte((uint8_t*)EEPROM_SILENT) == SILENT_MODE_STEALTH);
+#else
+	return false;
+#endif
+}
+
 //mmu main loop - state machine processing
 void mmu_loop(void)
 {
@@ -222,8 +233,8 @@ void mmu_loop(void)
 			bool version_valid = mmu_check_version();
 			if (!version_valid) mmu_show_warning();
 			else puts_P(PSTR("MMU version valid"));
-
-			if ((PRINTER_TYPE == PRINTER_MK3) || (PRINTER_TYPE == PRINTER_MK3_SNMM))
+			
+			if (!activate_stealth_mode())
 			{
 				FDEBUG_PUTS_P(PSTR("MMU <= 'P0'"));
 				mmu_puts_P(PSTR("P0\n")); //send 'read finda' request
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
index a9dcefe41..40a3a229b 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
@@ -498,7 +498,8 @@
 //#define SUPPORT_VERBOSITY
 
 #define MMU_REQUIRED_FW_BUILDNR 132
-//#define MMU_DEBUG //print communication between MMU2 and printer on serial
+#define MMU_FORCE_STEALTH_MODE
+#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
 
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
index 38d181349..e316c4f02 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
@@ -499,7 +499,8 @@
 //#define SUPPORT_VERBOSITY
 
 #define MMU_REQUIRED_FW_BUILDNR 132
-//#define MMU_DEBUG //print communication between MMU2 and printer on serial
+#define MMU_FORCE_STEALTH_MODE
+#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
 
diff --git a/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
index 53b545e8b..d3badf6aa 100644
--- a/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
@@ -498,7 +498,8 @@
 //#define SUPPORT_VERBOSITY
 
 #define MMU_REQUIRED_FW_BUILDNR 132
-//#define MMU_DEBUG //print communication between MMU2 and printer on serial
+#define MMU_FORCE_STEALTH_MODE
+#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
 
diff --git a/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
index e786b70ff..2563f848a 100644
--- a/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
@@ -499,7 +499,8 @@
 //#define SUPPORT_VERBOSITY
 
 #define MMU_REQUIRED_FW_BUILDNR 132
-//#define MMU_DEBUG //print communication between MMU2 and printer on serial
+#define MMU_FORCE_STEALTH_MODE
+#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