diff --git a/Firmware/mmu2.cpp b/Firmware/mmu2.cpp
index 7b6304d03..b46b51c3a 100644
--- a/Firmware/mmu2.cpp
+++ b/Firmware/mmu2.cpp
@@ -204,7 +204,7 @@ void MMU2::CheckFINDARunout() {
     // Check for FINDA filament runout
     if (!FindaDetectsFilament() && check_fsensor()) {
         SERIAL_ECHOLNPGM("FINDA filament runout!");
-        stop_and_save_print_to_ram(0, 0);
+        marlin_stop_and_save_print_to_ram();
         restore_print_from_ram_and_continue(0);
         if (SpoolJoin::spooljoin.isSpoolJoinEnabled() && get_current_tool() != (uint8_t)FILAMENT_UNKNOWN){ // Can't auto if F=?
             enquecommand_front_P(PSTR("M600 AUTO")); // save print and run M600 command
@@ -261,7 +261,6 @@ bool MMU2::VerifyFilamentEnteredPTFE() {
 
     // MMU has finished its load, push the filament further by some defined constant length
     // If the filament sensor reads 0 at any moment, then report FAILURE
-
     const float tryload_length = MMU2_CHECK_FILAMENT_PRESENCE_EXTRUSION_LENGTH - logic.ExtraLoadDistance();
     TryLoadUnloadReporter tlur(tryload_length);
 
@@ -617,7 +616,7 @@ void MMU2::SaveAndPark(bool move_axes) {
 
         // In case a power panic happens while waiting for the user
         // take a partial back up of print state into RAM (current position, etc.)
-        refresh_print_state_in_ram();
+        marlin_refresh_print_state_in_ram();
 
         if (move_axes) {
             mmu_print_saved |= SavedState::ParkExtruder;
@@ -676,7 +675,7 @@ void MMU2::ResumeUnpark() {
         // From this point forward, power panic should not use
         // the partial backup in RAM since the extruder is no
         // longer in parking position
-        clear_print_state_in_ram();
+        marlin_clear_print_state_in_ram();
 
         mmu_print_saved &= ~(SavedState::ParkExtruder);
     }
@@ -707,12 +706,12 @@ void MMU2::CheckUserInput() {
     case Buttons::Middle:
     case Buttons::Right:
         SERIAL_ECHOPGM("CheckUserInput-btnLMR ");
-        SERIAL_ECHOLN(btn);
+        SERIAL_ECHOLN(buttons_to_uint8t(btn));
         ResumeHotendTemp(); // Recover the hotend temp before we attempt to do anything else...
 
         if (mmu2.MMULastErrorSource() == MMU2::ErrorSourceMMU) {
             // Do not send a button to the MMU unless the MMU is in error state
-            Button(btn);
+            Button(buttons_to_uint8t(btn));
         }
 
         // A quick hack: for specific error codes move the E-motor every time.
diff --git a/Firmware/mmu2/buttons.h b/Firmware/mmu2/buttons.h
index 4941513a0..2d7b3128f 100644
--- a/Firmware/mmu2/buttons.h
+++ b/Firmware/mmu2/buttons.h
@@ -2,8 +2,8 @@
 #include <stdint.h>
 
 // Helper macros to parse the operations from Btns()
-#define BUTTON_OP_RIGHT(X) ( ( X & 0xF0 ) >> 4 )
-#define BUTTON_OP_MIDDLE(X) ( X & 0x0F )
+#define BUTTON_OP_RIGHT(X)  ((X & 0xF0) >> 4)
+#define BUTTON_OP_MIDDLE(X) (X & 0x0F)
 
 namespace MMU2 {
 
@@ -23,11 +23,11 @@ enum class ButtonOperations : uint8_t {
 };
 
 /// Button codes + extended actions performed on the printer's side
-enum Buttons : uint8_t {
+enum class Buttons : uint_least8_t {
     Right = 0,
     Middle,
     Left,
-    
+
     // performed on the printer's side
     ResetMMU,
     Load,
@@ -35,9 +35,12 @@ enum Buttons : uint8_t {
     StopPrint,
     DisableMMU,
     TuneMMU, // Printer changes MMU register value
-    
+
     NoButton = 0xff // shall be kept last
 };
 
+constexpr uint_least8_t buttons_to_uint8t(Buttons b) {
+    return static_cast<uint8_t>(b);
+}
 
 } // namespace MMU2
diff --git a/Firmware/mmu2_marlin.h b/Firmware/mmu2_marlin.h
index 0990fdbc2..40aeee0f2 100644
--- a/Firmware/mmu2_marlin.h
+++ b/Firmware/mmu2_marlin.h
@@ -44,6 +44,9 @@ bool marlin_printingIsActive();
 void marlin_manage_heater();
 void marlin_manage_inactivity(bool b);
 void marlin_idle(bool b);
+void marlin_refresh_print_state_in_ram();
+void marlin_clear_print_state_in_ram();
+void marlin_stop_and_save_print_to_ram();
 
 int16_t thermal_degTargetHotend();
 int16_t thermal_degHotend();
diff --git a/Firmware/mmu2_marlin1.cpp b/Firmware/mmu2_marlin1.cpp
index 05a9bf05e..3a7dfa837 100644
--- a/Firmware/mmu2_marlin1.cpp
+++ b/Firmware/mmu2_marlin1.cpp
@@ -101,6 +101,18 @@ void marlin_idle(bool b){
     manage_inactivity(b);
 }
 
+void marlin_refresh_print_state_in_ram(){
+    refresh_print_state_in_ram();
+}
+
+void marlin_clear_print_state_in_ram(){
+    clear_print_state_in_ram();
+}
+
+void marlin_stop_and_save_print_to_ram(){
+    stop_and_save_print_to_ram(0,0);
+}
+
 int16_t thermal_degTargetHotend() {
     return degTargetHotend(0);
 }