diff --git a/src/ATBAPP/DeviceControllerInterface.h b/src/ATBAPP/DeviceControllerInterface.h
index 3dcda78..094f2ad 100644
--- a/src/ATBAPP/DeviceControllerInterface.h
+++ b/src/ATBAPP/DeviceControllerInterface.h
@@ -66,9 +66,9 @@ public:
 
 public slots:
     virtual void onChangedProgramModeToSELL() = 0;
-    virtual void changedProgramModeToSERVICE() = 0;
-    virtual void changedProgramModeToIDLE() = 0;
-    virtual void changedProgramModeToOOO() = 0;
+    virtual void onChangedProgramModeToSERVICE() = 0;
+    virtual void onChangedProgramModeToIDLE() = 0;
+    virtual void onChangedProgramModeToOOO() = 0;
 
 signals:
     virtual void printTicketFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
@@ -101,7 +101,17 @@ signals:
     /**
      * emitted e.g. if service door is opened
      */
-    virtual void requestServiceMode() = 0;
+    virtual void requestModeSERVICE() = 0;
+
+    /**
+     * emitted e.g. if doors are closed
+     */
+    virtual void requestModeIDLE() = 0;
+
+    /**
+     * emitted e.g. on severe errors
+     */
+    virtual void requestModeOOO() = 0;
 
     /**
      * emitted e.g. if service door is opened