diff --git a/src/GUI/Dialogs/MaterialEditor.cpp b/src/GUI/Dialogs/MaterialEditor.cpp
index 9ec877753..d077e3886 100644
--- a/src/GUI/Dialogs/MaterialEditor.cpp
+++ b/src/GUI/Dialogs/MaterialEditor.cpp
@@ -11,7 +11,7 @@ MaterialEditor::MaterialEditor(wxWindow* parent, t_config_option_keys options) :
     this->_build();
     }
 
-void MaterialEditor::_update() {
+void MaterialEditor::_update(const std::string& opt_key) {
 }
 
 void MaterialEditor::_build() {
diff --git a/src/GUI/Dialogs/PrinterEditor.cpp b/src/GUI/Dialogs/PrinterEditor.cpp
index 8143e9b26..94c5c6167 100644
--- a/src/GUI/Dialogs/PrinterEditor.cpp
+++ b/src/GUI/Dialogs/PrinterEditor.cpp
@@ -11,7 +11,7 @@ PrinterEditor::PrinterEditor(wxWindow* parent, t_config_option_keys options) :
     this->_build();
     }
 
-void PrinterEditor::_update() {
+void PrinterEditor::_update(const std::string& opt_key) {
 }
 
 void PrinterEditor::_build() {