diff --git a/include/hwapi.h b/include/hwapi.h
index 3366bdc..fff7e9d 100644
--- a/include/hwapi.h
+++ b/include/hwapi.h
@@ -143,6 +143,10 @@ public:
 
     bool dc_updateDC(QString binFileName, QString baudrate,
                      QString comPort) const override;
+    
+    bool dc_updatePrinterTemplate(enum FileTypeJson type,
+                                  int templateNr,
+                                  QString const &fname) const override;
 
     // ------------------------------------------------------------------------------
     // Level 1, control device-controller (functions of µC)