diff --git a/MM-control-01/main.cpp b/MM-control-01/main.cpp
index dc18b305..73c3a6aa 100644
--- a/MM-control-01/main.cpp
+++ b/MM-control-01/main.cpp
@@ -40,6 +40,7 @@ enum class S
     Printing,
     SignalFilament,
     Wait,
+    WaitOk,
 };
 }
 
@@ -63,6 +64,9 @@ enum class S
 //!   Any --> Wait : W0
 //!   Setup --> Idle
 //!   Wait --> Idle : RightButton
+//!   WaitOk --> Idle : RightButton
+//!   Wait --> WaitOk : MiddleButton && mmctl_IsOk
+//!   WaitOk --> Wait : MiddleButton && !mmctl_IsOk
 //! }
 //! @enduml
 static S state;
@@ -112,6 +116,17 @@ void signal_load_failure()
     delay(800);
 }
 
+void signal_ok_after_load_failure()
+{
+    shr16_set_led(0x000);
+    delay(800);
+    shr16_set_led(1 << 2 * (4 - active_extruder));
+    delay(100);
+    shr16_set_led(2 << 2 * (4 - active_extruder));
+    delay(100);
+    delay(800);
+}
+
 //! @brief Signal filament presence
 //!
 //! @retval true still present
@@ -386,7 +401,22 @@ void loop()
         switch(buttonClicked())
         {
         case Btn::middle:
-            mmctl_checkOk();
+            if (mmctl_IsOk()) state = S::WaitOk;
+            break;
+        case Btn::right:
+            state = S::Idle;
+            fprintf_P(uart_com, PSTR("ok\n"));
+            break;
+        default:
+            break;
+        }
+        break;
+    case S::WaitOk:
+        signal_ok_after_load_failure();
+        switch(buttonClicked())
+        {
+        case Btn::middle:
+            if (!mmctl_IsOk()) state = S::Wait;
             break;
         case Btn::right:
             state = S::Idle;
diff --git a/MM-control-01/main.h b/MM-control-01/main.h
index a583ed41..c916da45 100644
--- a/MM-control-01/main.h
+++ b/MM-control-01/main.h
@@ -10,6 +10,7 @@ void unrecoverable_error();
 void drive_error();
 void check_filament_not_present();
 void signal_load_failure();
+void signal_ok_after_load_failure();
 
 extern uint8_t tmc2130_mode;
 extern FILE* uart_com;
diff --git a/MM-control-01/mmctl.cpp b/MM-control-01/mmctl.cpp
index 49122c59..b491c2fb 100644
--- a/MM-control-01/mmctl.cpp
+++ b/MM-control-01/mmctl.cpp
@@ -232,13 +232,19 @@ static bool checkOk()
     return _ret;
 }
 
-void mmctl_checkOk()
+//! @brief Can FINDA detect filament tip
+//!
+//! Move filament back and forth to align it by FINDA.
+//! @retval true success
+//! @retval false failure
+bool mmctl_IsOk()
 {
     tmc2130_init_axis(AX_PUL, tmc2130_mode);
     motion_engage_idler();
-    checkOk();
+    const bool retval = checkOk();
     motion_disengage_idler();
     tmc2130_disable_axis(AX_PUL, tmc2130_mode);
+    return retval;
 }
 
 void load_filament_withSensor()
@@ -308,13 +314,7 @@ void load_filament_withSensor()
             }
             else
             {
-                shr16_set_led(0x000);
-                delay(800);
-                shr16_set_led(1 << 2 * (4 - active_extruder));
-                delay(100);
-                shr16_set_led(2 << 2 * (4 - active_extruder));
-                delay(100);
-                delay(800);
+                signal_ok_after_load_failure();
             }
 
             switch (buttonClicked())
diff --git a/MM-control-01/mmctl.h b/MM-control-01/mmctl.h
index b6c8774c..d8d053e3 100644
--- a/MM-control-01/mmctl.h
+++ b/MM-control-01/mmctl.h
@@ -18,6 +18,6 @@ void load_filament_inPrinter();
 void unload_filament_withSensor();
 void eject_filament(uint8_t filament);
 void recover_after_eject();
-void mmctl_checkOk();
+bool mmctl_IsOk();
 
 #endif //_MMCTL_H